update 2024-04-24 21:22:23

src/bfd1d6d5-56c1-4fe9-9fee-1c5910e1f5d8/code.php

@@ -9598,7 +9598,7 @@ class Table extends BaseTable implements Tableinterface
 				'store' => 'json',
 				'tab_name' => 'Updates',
 				'db' => [
-					'type' => 'TEXT',
+					'type' => 'MEDIUMTEXT',
 					'default' => 'EMPTY',
 					'null_switch' => 'NOT NULL',
 					'unique_key' => false,
@@ -10526,7 +10526,7 @@ class Table extends BaseTable implements Tableinterface
 				'store' => 'json',
 				'tab_name' => 'Updates',
 				'db' => [
-					'type' => 'TEXT',
+					'type' => 'MEDIUMTEXT',
 					'default' => 'EMPTY',
 					'null_switch' => 'NOT NULL',
 					'unique_key' => false,
@@ -10734,7 +10734,7 @@ class Table extends BaseTable implements Tableinterface
 				'store' => 'json',
 				'tab_name' => 'Updates',
 				'db' => [
-					'type' => 'TEXT',
+					'type' => 'MEDIUMTEXT',
 					'default' => 'EMPTY',
 					'null_switch' => 'NOT NULL',
 					'unique_key' => false,

src/e0f6ddbe-2a35-4537-942c-faff2ebd04f6/code.php

@@ -48,7 +48,7 @@ abstract class BaseTable implements Tableinterface
 			'tab_name' => NULL,
 			'db' => [
 				'type' => 'INT(11)',
-				'default' => '',
+				'default' => 'EMPTY',
 				'auto_increment' => true,
 				'primary_key' => true,
 				'null_switch' => 'NOT NULL'
@@ -227,7 +227,7 @@ abstract class BaseTable implements Tableinterface
 			'tab_name' => NULL,
 			'db' => [
 				'type' => 'TEXT',
-				'default' => '',
+				'default' => 'EMPTY',
 				'null_switch' => 'NULL'
 			]
 		]

src/e0f6ddbe-2a35-4537-942c-faff2ebd04f6/code.power

@@ -24,7 +24,7 @@
 			'tab_name' => NULL,
 			'db' => [
 				'type' => 'INT(11)',
-				'default' => '',
+				'default' => 'EMPTY',
 				'auto_increment' => true,
 				'primary_key' => true,
 				'null_switch' => 'NOT NULL'
@@ -203,7 +203,7 @@
 			'tab_name' => NULL,
 			'db' => [
 				'type' => 'TEXT',
-				'default' => '',
+				'default' => 'EMPTY',
 				'null_switch' => 'NULL'
 			]
 		]

src/f3c04c28-bce4-422e-be93-7d163e4e342b/README.md

@@ -19,23 +19,28 @@ abstract Schema  #Orange {
   - array $keys
   - array $columns
   - array $success
+  # $currentVersion
   + __construct(Table $table)
   + update() : array
-  + createTable(string $table) : void
-  + updateSchema(string $table) : void
   # {abstract} getCode() : string
+  # tableExists(string $table) : bool
+  + updateSchema(string $table) : void
+  + createTable(string $table) : void
+  # getExistingColumns(string $table) : array
   # addMissingColumns(string $table, array $columns) : void
   # checkColumnsDataType(string $table, array $columns) : void
+  # getColumnDefinition(string $table, string $field) : ?string
+  # checkDefault(string $table, string $column) : void
   # updateColumnsDataType(string $table, array $columns) : void
+  # getTable(string $table) : string
+   isDataTypeChangeSignificant(string $currentType, string $expectedType) : bool
+  # adjustExistingDefaults(string $table, string $column, ...) : bool
   # updateColumnDataType(string $updateString, string $table, ...) : bool
   # getTableKeys() : string
+  # setKeys(array $column) : void
   # setUniqueKey(array $column) : void
   # setKey(array $column) : void
-  # getTable(string $table) : string
+  # getDefaultValue(string $type, ?string $defaultValue, ...) : string
-  - tableExists(string $table) : bool
-  - getExistingColumns(string $table) : array
-  - getColumnDefinition(string $table, string $field) : ?string
-  - setKeys(array $column) : void
 }
 
 note right of Schema::__construct
@@ -51,25 +56,39 @@ note left of Schema::update
   return: array
 end note
 
-note right of Schema::createTable
+note right of Schema::getCode
-  Create a table with all necessary fields.
+  Get the targeted component code
 
   since: 3.2.1
-  return: void
+  return: string
 end note
 
-note left of Schema::updateSchema
+note left of Schema::tableExists
+  Check if a table exists in the database.
+
+  since: 3.2.1
+  return: bool
+end note
+
+note right of Schema::updateSchema
   Update the schema of an existing table.
 
   since: 3.2.1
   return: void
 end note
 
-note right of Schema::getCode
+note left of Schema::createTable
-  Get the targeted component code
+  Create a table with all necessary fields.
 
   since: 3.2.1
-  return: string
+  return: void
+end note
+
+note right of Schema::getExistingColumns
+  Fetch existing columns from a database table.
+
+  since: 3.2.1
+  return: array
 end note
 
 note left of Schema::addMissingColumns
@@ -86,6 +105,21 @@ note right of Schema::checkColumnsDataType
   return: void
 end note
 
+note left of Schema::getColumnDefinition
+  Generates a SQL snippet for defining a table column, incorporating column type,
+default value, nullability, and auto-increment properties.
+
+  since: 3.2.1
+  return: ?string
+end note
+
+note right of Schema::checkDefault
+  Check and Update the default values if needed, including existing data adjustments
+
+  since: 3.2.1
+  return: void
+end note
+
 note left of Schema::updateColumnsDataType
   Update the data type of the given fields.
 
@@ -93,7 +127,38 @@ note left of Schema::updateColumnsDataType
   return: void
 end note
 
-note right of Schema::updateColumnDataType
+note right of Schema::getTable
+  Add the component name to get the full table name.
+
+  since: 3.2.1
+  return: string
+end note
+
+note left of Schema::isDataTypeChangeSignificant
+  Determines if the change in data type between two definitions is significant.
+This function checks if there's a significant difference between the current
+data type and the expected data type that would require updating the database schema.
+It ignores size and other modifiers for certain data types where MySQL considers
+these attributes irrelevant for storage.
+
+  since: 3.2.1
+  return: bool
+end note
+
+note right of Schema::adjustExistingDefaults
+  Updates existing rows in a column to a new default value
+
+  since: 3.2.1
+  return: bool
+  
+  arguments:
+    string $table
+    string $column
+    mixed $currentDefault
+    mixed $newDefault
+end note
+
+note left of Schema::updateColumnDataType
   Update the data type of the given field.
 
   since: 3.2.1
@@ -105,13 +170,20 @@ note right of Schema::updateColumnDataType
     string $field
 end note
 
-note left of Schema::getTableKeys
+note right of Schema::getTableKeys
   Key all needed keys for this table
 
   since: 3.2.1
   return: string
 end note
 
+note left of Schema::setKeys
+  Function to set the view keys
+
+  since: 3.2.1
+  return: void
+end note
+
 note right of Schema::setUniqueKey
   Function to set the unique key
 
@@ -126,40 +198,19 @@ note left of Schema::setKey
   return: void
 end note
 
-note right of Schema::getTable
+note right of Schema::getDefaultValue
-  Add the component name to get the full table name.
+  Adjusts the default value SQL fragment for a database field based on its type and specific rules.
+If the field is of type DATETIME and the Joomla version is not 3, it sets the default to CURRENT_TIMESTAMP
+if not explicitly specified otherwise. For all other types, or when a 'EMPTY' default is specified, it handles
+defaults by either leaving them unset or applying the provided default, properly quoted for SQL safety.
 
   since: 3.2.1
   return: string
-end note
   
-note left of Schema::tableExists
+  arguments:
-  Check if a table exists in the database.
+    string $type
-
+    ?string $defaultValue
-  since: 3.2.1
+    bool $pure = false
-  return: bool
-end note
-
-note right of Schema::getExistingColumns
-  Fetch existing columns from a database table.
-
-  since: 3.2.1
-  return: array
-end note
-
-note left of Schema::getColumnDefinition
-  Generates a SQL snippet for defining a table column, incorporating column type,
-default value, nullability, and auto-increment properties.
-
-  since: 3.2.1
-  return: ?string
-end note
-
-note right of Schema::setKeys
-  Function to set the view keys
-
-  since: 3.2.1
-  return: void
 end note
  
 @enduml

src/f3c04c28-bce4-422e-be93-7d163e4e342b/code.php

@@ -13,6 +13,7 @@ namespace VDM\Joomla\Abstraction;
 
 
 use Joomla\CMS\Factory;
+use Joomla\CMS\Version;
 use VDM\Joomla\Interfaces\Tableinterface as Table;
 use VDM\Joomla\Interfaces\SchemaInterface;
 
@@ -87,6 +88,14 @@ abstract class Schema implements SchemaInterface
 	 */
 	private array $success;
 
+	/**
+	 * Current Joomla Version We are IN
+	 *
+	 * @var     int
+	 * @since 3.2.1
+	 **/
+	protected $currentVersion;
+
 	/**
 	 * Constructor.
 	 *
@@ -108,8 +117,11 @@ abstract class Schema implements SchemaInterface
 
 			// set the component table
 			$this->prefix = $this->db->getPrefix() . $this->getCode();
+
+			// set the current version
+			$this->currentVersion = Version::MAJOR_VERSION;
 		} catch (\Exception $e) {
-			throw new \Exception("Error: failed to initialize schema class due to a database error.", 0, $e);
+			throw new \Exception("Error: failed to initialize schema class due to a database error.");
 		}
 	}
 
@@ -141,7 +153,7 @@ abstract class Schema implements SchemaInterface
 				}
 			}
 		} catch (\Exception $e) {
-			throw new \Exception("Error: updating database schema.", 0, $e);
+			throw new \Exception("Error: updating database schema. " . $e->getMessage());
 		}
 
 		if (count($this->success) == 1)
@@ -156,6 +168,63 @@ abstract class Schema implements SchemaInterface
 		return $this->success;
 	}
 
+	/**
+	 * Get the targeted component code
+	 *
+	 * @return  string
+	 * @since 3.2.1
+	 */
+	abstract protected function getCode(): string;
+
+	/**
+	 * Check if a table exists in the database.
+	 *
+	 * @param string $table The name of the table to check.
+	 *
+	 * @return bool True if table exists, False otherwise.
+	 * @since  3.2.1
+	 */
+	protected function tableExists(string $table): bool
+	{
+		return in_array($this->getTable($table), $this->tables);
+	}
+
+	/**
+	 * Update the schema of an existing table.
+	 *
+	 * @param string $table  The table to update.
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 * @throws \Exception If there is an error while updating the schema.
+	 */
+	public function updateSchema(string $table): void
+	{
+		try {
+			$existingColumns = $this->getExistingColumns($table);
+			$expectedColumns = $this->table->fields($table, true);
+
+			$missingColumns = array_diff($expectedColumns, $existingColumns);
+
+			if (!empty($missingColumns))
+			{
+				$this->addMissingColumns($table, $missingColumns);
+			}
+
+			$this->checkColumnsDataType($table, $expectedColumns);
+
+		} catch (\Exception $e) {
+			throw new \Exception("Error: updating schema for $table table. " . $e->getMessage());
+		}
+
+		if (!empty($missingColumns))
+		{
+			$column_s = (count($missingColumns) == 1) ? 'column' : 'columns';
+			$missingColumns = implode(', ', $missingColumns);
+			$this->success[] = "Success: added missing ($missingColumns) $column_s to $table table.";
+		}
+	}
+
 	/**
 	 * Create a table with all necessary fields.
 	 *
@@ -189,55 +258,26 @@ abstract class Schema implements SchemaInterface
 			$this->db->setQuery($createTableSql);
 			$this->db->execute();
 		} catch (\Exception $e) {
-			throw new \Exception("Error: failed to create missing $table table.", 0, $e);
+			throw new \Exception("Error: failed to create missing $table table. " . $e->getMessage());
 		}
 
 		$this->success[] = "Success: created missing  $table table.";
 	}
 
 	/**
-	 * Update the schema of an existing table.
+	 * Fetch existing columns from a database table.
 	 *
-	 * @param string $table  The table to update.
+	 * @param string $table The name of the table.
 	 *
-	 * @return void
+	 * @return array An array of column names.
-	 * @since  3.2.1
-	 * @throws \Exception If there is an error while updating the schema.
-	 */
-	public function updateSchema(string $table): void
-	{
-		try {
-			$existingColumns = $this->getExistingColumns($table);
-			$expectedColumns = $this->table->fields($table, true);
-
-			$missingColumns = array_diff($expectedColumns, $existingColumns);
-
-			if (!empty($missingColumns))
-			{
-				$this->addMissingColumns($table, $missingColumns);
-			}
-
-			$this->checkColumnsDataType($table, $expectedColumns);
-
-		} catch (\Exception $e) {
-			throw new \Exception("Error: updating schema for $table table.", 0, $e);
-		}
-
-		if (!empty($missingColumns))
-		{
-			$column_s = (count($missingColumns) == 1) ? 'column' : 'columns';
-			$missingColumns = implode(', ', $missingColumns);
-			$this->success[] = "Success: added missing ($missingColumns) $column_s to $table table.";
-		}
-	}
-
-	/**
-	 * Get the targeted component code
-	 *
-	 * @return  string
 	 * @since  3.2.1
 	 */
-	abstract protected function getCode(): string;
+	protected function getExistingColumns(string $table): array
+	{
+		$this->columns = $this->db->getTableColumns($this->getTable($table), false);
+
+		return array_keys($this->columns);
+	}
 
 	/**
 	 * Add missing columns to a table.
@@ -270,7 +310,7 @@ abstract class Schema implements SchemaInterface
 		} catch (\Exception $e) {
 			$column_s = (count($columns) == 1) ? 'column' : 'columns';
 			$columns = implode(', ', $columns);
-			throw new \Exception("Error: failed to add ($columns) $column_s to $table table.", 0, $e);
+			throw new \Exception("Error: failed to add ($columns) $column_s to $table table. " . $e->getMessage());
 		}
 	}
 
@@ -291,18 +331,20 @@ abstract class Schema implements SchemaInterface
 			$current = $this->columns[$column] ?? null;
 			if ($current === null || ($expected = $this->table->get($table, $column, 'db')) === null)
 			{
-				// this field is no longer part of the component and can be ignored
 				continue;
 			}
 
 			// check if the data type and size match
-			if (strcasecmp($current->Type, $expected['type']) != 0)
+			if ($this->isDataTypeChangeSignificant($current->Type, $expected['type']))
 			{
 				$requireUpdate[$column] = [
 					'column' => $column,
 					'current' => $current->Type,
 					'expected' => $expected['type']
 				];
+
+				// check if update of default values is needed
+				$this->checkDefault($table, $column);
 			}
 		}
 
@@ -312,6 +354,89 @@ abstract class Schema implements SchemaInterface
 		}
 	}
 
+	/**
+	 * Generates a SQL snippet for defining a table column, incorporating column type,
+	 *    default value, nullability, and auto-increment properties.
+	 *
+	 * @param string $table The table name to be used.
+	 * @param string $field The field name in the table to generate SQL for.
+	 *
+	 * @return string|null The SQL snippet for the column definition.
+	 * @since 3.2.1
+	 * @throws \Exception If the schema details cannot be retrieved or the SQL statement cannot be constructed properly.
+	 */
+	protected function getColumnDefinition(string $table, string $field): ?string
+	{
+		try {
+			// Retrieve the database schema details for the specified table and field
+			if (($db = $this->table->get($table, $field, 'db')) === null)
+			{
+				return null;
+			}
+
+			// Prepare the column name
+			$column_name = $this->db->quoteName($field);
+			$db['name'] = $field;
+
+			// Prepare the type and default value SQL statement
+			$type = $db['type'] ??  'TEXT';
+			$db_default = isset($db['default']) ? $db['default'] : null;
+			$default = $this->getDefaultValue($type, $db_default);
+
+			// Prepare the null switch, and auto increment statement
+			$null_switch = !empty($db['null_switch']) ? " " . $db['null_switch'] : '';
+			$auto_increment = !empty($db['auto_increment']) ? " AUTO_INCREMENT" : '';
+
+			$this->setKeys($db);
+
+			// Assemble the SQL snippet for the column definition
+			return "{$column_name} {$type}{$null_switch}{$default}{$auto_increment}";
+		} catch (\Exception $e) {
+			throw new \Exception("Error: failed to generate column definition for ($table.$field). " . $e->getMessage());
+		}
+	}
+
+	/**
+	 * Check and Update the default values if needed, including existing data adjustments
+	 *
+	 * @param string $table   The table to update.
+	 * @param string $column  The column/field to check.
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 */
+	protected function checkDefault(string $table, string $column): void
+	{
+		// Retrieve the expected column configuration
+		$expected = $this->table->get($table, $column, 'db');
+
+		// Skip updates if the column is auto_increment
+		if (isset($expected['auto_increment']) && $expected['auto_increment'])
+		{
+			return;
+		}
+
+		// Retrieve the current column configuration
+		$current = $this->columns[$column];
+
+		// Check if default should be empty and current default is null, skip processing
+		if (strtoupper($expected['default']) === 'EMPTY' && $current->Default === NULL)
+		{
+			return;
+		}
+
+		// Determine the new default value based on the expected settings
+		$type = $expected['type'] ??  'TEXT';
+		$db_default = isset($expected['default']) ? $expected['default'] : null;
+		$newDefault = $this->getDefaultValue($type, $db_default, true);
+
+		// First, adjust existing rows to conform to the new default if necessary
+		if (is_numeric($newDefault) && $this->adjustExistingDefaults($table, $column, $current->Default, $newDefault))
+		{
+			$this->success[] = "Success: updated the ($column) defaults in $table table.";
+		}
+	}
+
 	/**
 	 * Update the data type of the given fields.
 	 *
@@ -336,13 +461,120 @@ abstract class Schema implements SchemaInterface
 
 			if ($this->updateColumnDataType($alterQuery, $table, $column))
 			{
-				$current = (string) $types['current'] ?? 'error';
+				$current = $types['current'] ?? 'error';
-				$expected = (string) $types['expected'] ?? 'error';
+				$expected = $types['expected'] ?? 'error';
 				$this->success[] = "Success: updated ($column) column datatype $current to $expected in $table table.";
 			}
 		}
 	}
 
+	/**
+	 * Add the component name to get the full table name.
+	 *
+	 * @param string $table The table name.
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 */
+	protected function getTable(string $table): string
+	{
+		return $this->prefix . '_' . $table;
+	}
+
+	/**
+	 * Determines if the change in data type between two definitions is significant.
+	 *
+	 * This function checks if there's a significant difference between the current
+	 * data type and the expected data type that would require updating the database schema.
+	 * It ignores size and other modifiers for certain data types where MySQL considers
+	 * these attributes irrelevant for storage.
+	 *
+	 * @param string $currentType   The current data type from the database schema.
+	 * @param string $expectedType  The expected data type to validate against.
+	 *
+	 * @return bool Returns true if the data type change is significant, otherwise false.
+	 * @since  3.2.1
+	 */
+	function isDataTypeChangeSignificant(string $currentType, string $expectedType): bool
+	{
+		// we only do this for Joomla 4+
+		if ($this->currentVersion != 3)
+		{
+			// Normalize both input types to lowercase for case-insensitive comparison
+			$currentType = strtolower($currentType);
+			$expectedType = strtolower($expectedType);
+
+			// Define types where size or other modifiers are irrelevant
+			$sizeIrrelevantTypes = [
+				'int', 'tinyint', 'smallint', 'mediumint', 'bigint', // Standard integer types
+				'int unsigned', 'tinyint unsigned', 'smallint unsigned', 'mediumint unsigned', 'bigint unsigned', // Unsigned integer types
+			];
+
+			// Check if the type involves size-irrelevant types
+			foreach ($sizeIrrelevantTypes as $type)
+			{
+				if (strpos($expectedType, $type) !== false)
+				{
+					// Remove any numeric sizes and modifiers for comparison
+					$pattern = '/\(\d+\)|unsigned|\s*/';
+					$cleanCurrentType = preg_replace($pattern, '', $currentType);
+					$cleanExpectedType = preg_replace($pattern, '', $expectedType);
+
+					// Compare the cleaned types
+					if ($cleanCurrentType === $cleanExpectedType)
+					{
+						return false; // No significant change
+					}
+				}
+			}
+		}
+
+		// Perform a standard case-insensitive comparison for other types
+		if (strcasecmp($currentType, $expectedType) == 0)
+		{
+			return false; // No significant change
+		}
+
+		return true; // Significant datatype change detected
+	}
+
+	/**
+	 * Updates existing rows in a column to a new default value
+	 *
+	 * @param string $table           The table to update.
+	 * @param string $column          The column to update.
+	 * @param mixed  $currentDefault  Current default value.
+	 * @param mixed  $newDefault      The new default value to be set.
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 * @throws \Exception If there is an error updating column defaults.
+	 */
+	protected function adjustExistingDefaults(string $table, string $column, $currentDefault, $newDefault): bool
+	{
+		// Determine if adjustment is needed based on new and current defaults
+		if ($newDefault !== $currentDefault)
+		{
+			try {
+				// Format the new default for SQL use
+				$sqlDefault = $this->db->quote($newDefault);
+
+				$updateTable = 'UPDATE ' . $this->db->quoteName($this->getTable($table));
+				$dbField = $this->db->quoteName($column);
+
+				// Update SQL to set new default on existing rows where the default is currently the old default
+				$sql = $updateTable . " SET $dbField = $sqlDefault WHERE $dbField IS NULL OR $dbField = ''";
+
+				// Execute the update
+				$this->db->setQuery($sql);
+				return $this->db->execute();
+			} catch (\Exception $e) {
+				throw new \Exception("Error: failed to update ($column) column defaults in $table table. " . $e->getMessage());
+			}
+		}
+		return false;
+	}
+
 	/**
 	 * Update the data type of the given field.
 	 *
@@ -360,7 +592,7 @@ abstract class Schema implements SchemaInterface
 			$this->db->setQuery($updateString);
 			return $this->db->execute();
 		} catch (\Exception $e) {
-			throw new \Exception("Error: failed to update the datatype of ($field) column in $table table.", 0, $e);
+			throw new \Exception("Error: failed to update the datatype of ($field) column in $table table. " . $e->getMessage());
 		}
 	}
 
@@ -388,6 +620,20 @@ abstract class Schema implements SchemaInterface
 		return implode(', ', $keys);
 	}
 
+	/**
+	 * Function to set the view keys
+	 *
+	 * @param string $column The field column database array values
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 */
+	protected function setKeys(array $column): void
+	{
+		$this->setUniqueKey($column);
+		$this->setKey($column);
+	}
+
 	/**
 	 * Function to set the unique key
 	 *
@@ -423,97 +669,34 @@ abstract class Schema implements SchemaInterface
 	}
 
 	/**
-	 * Add the component name to get the full table name.
+	 * Adjusts the default value SQL fragment for a database field based on its type and specific rules.
 	 *
-	 * @param string $table The table name.
+	 * If the field is of type DATETIME and the Joomla version is not 3, it sets the default to CURRENT_TIMESTAMP
+	 * if not explicitly specified otherwise. For all other types, or when a 'EMPTY' default is specified, it handles
+	 * defaults by either leaving them unset or applying the provided default, properly quoted for SQL safety.
 	 *
-	 * @return void
+	 * @param string	   $type          The type of the database field (e.g., 'DATETIME').
+	 * @param string|null  $defaultValue  Optional default value for the field, null if not provided.
+	 * @param bool         $pure          Optional to add the 'DEFAULT' string or not.
+	 *
+	 * @return string      The SQL fragment to set the default value for a field.
 	 * @since 3.2.1
 	 */
-	protected function getTable(string $table): string
+	protected function getDefaultValue(string $type, ?string $defaultValue, bool $pure = false): string
 	{
-		return $this->prefix . '_' . $table;
+		if ($defaultValue === null || strtoupper($defaultValue) === 'EMPTY')
+		{
+			return '';
 		}
 
-	/**
+		// Set default for DATETIME fields in Joomla versions above 3
-	 * Check if a table exists in the database.
+		if (strtoupper($type) === 'DATETIME' && $this->currentVersion != 3)
-	 *
-	 * @param string $table The name of the table to check.
-	 *
-	 * @return bool True if table exists, False otherwise.
-	 * @since  3.2.1
-	 */
-	private function tableExists(string $table): bool
 		{
-		return in_array($this->getTable($table), $this->tables);
+			return $pure ? "CURRENT_TIMESTAMP" : " DEFAULT CURRENT_TIMESTAMP";
 		}
 
-	/**
+		// Apply and quote the default value
-	 * Fetch existing columns from a database table.
+		return $pure ? $defaultValue : " DEFAULT " . $this->db->quote($defaultValue);
-	 *
-	 * @param string $table The name of the table.
-	 *
-	 * @return array An array of column names.
-	 * @since  3.2.1
-	 */
-	private function getExistingColumns(string $table): array
-	{
-		$this->columns = $this->db->getTableColumns($this->getTable($table), false);
-
-		return array_keys($this->columns);
-	}
-
-	/**
-	 * Generates a SQL snippet for defining a table column, incorporating column type,
-	 *    default value, nullability, and auto-increment properties.
-	 *
-	 * @param string $table The table name to be used.
-	 * @param string $field The field name in the table to generate SQL for.
-	 *
-	 * @return string|null The SQL snippet for the column definition.
-	 * @since 3.2.1
-	 * @throws \Exception If the schema details cannot be retrieved or the SQL statement cannot be constructed properly.
-	 */
-	private function getColumnDefinition(string $table, string $field): ?string
-	{
-		try {
-			// Retrieve the database schema details for the specified table and field
-			if (($db = $this->table->get($table, $field, 'db')) === null)
-			{
-				return null;
-			}
-
-			// Prepare the column name
-			$column_name = $this->db->quoteName($field);
-			$db['name'] = $field;
-
-			// Prepare the default value SQL, null switch, and auto increment statement
-			$default = !empty($db['default']) ? " DEFAULT " . $this->db->quote($db['default']) : '';
-			$null_switch = !empty($db['null_switch']) ? " " . $db['null_switch'] : '';
-			$auto_increment = !empty($db['auto_increment']) ? " AUTO_INCREMENT" : '';
-			$type = !empty($db['type']) ? $db['type'] : 'TEXT';
-
-			$this->setKeys($db);
-
-			// Assemble the SQL snippet for the column definition
-			return "{$column_name} {$type}{$default}{$null_switch}{$auto_increment}";
-		} catch (\Exception $e) {
-			throw new \Exception("Error: failed to generate column definition for $table.$field", 0, $e);
-		}
-	}
-
-	/**
-	 * Function to set the view keys
-	 *
-	 * @param string $column The field column database array values
-	 *
-	 * @return void
-	 * @since  3.2.1
-	 */
-	private function setKeys(array $column): void
-	{
-		$this->setUniqueKey($column);
-		$this->setKey($column);
 	}
 }
 

src/f3c04c28-bce4-422e-be93-7d163e4e342b/code.power

@@ -61,6 +61,14 @@
 	 */
 	private array $success;
 
+	/**
+	 * Current Joomla Version We are IN
+	 *
+	 * @var     int
+	 * @since 3.2.1
+	 **/
+	protected $currentVersion;
+
 	/**
 	 * Constructor.
 	 *
@@ -82,8 +90,11 @@
 
 			// set the component table
 			$this->prefix = $this->db->getPrefix() . $this->getCode();
+
+			// set the current version
+			$this->currentVersion = Version::MAJOR_VERSION;
 		} catch (\Exception $e) {
-			throw new \Exception("Error: failed to initialize schema class due to a database error.", 0, $e);
+			throw new \Exception("Error: failed to initialize schema class due to a database error.");
 		}
 	}
 
@@ -115,7 +126,7 @@
 				}
 			}
 		} catch (\Exception $e) {
-			throw new \Exception("Error: updating database schema.", 0, $e);
+			throw new \Exception("Error: updating database schema. " . $e->getMessage());
 		}
 
 		if (count($this->success) == 1)
@@ -130,6 +141,63 @@
 		return $this->success;
 	}
 
+	/**
+	 * Get the targeted component code
+	 *
+	 * @return  string
+	 * @since 3.2.1
+	 */
+	abstract protected function getCode(): string;
+
+	/**
+	 * Check if a table exists in the database.
+	 *
+	 * @param string $table The name of the table to check.
+	 *
+	 * @return bool True if table exists, False otherwise.
+	 * @since  3.2.1
+	 */
+	protected function tableExists(string $table): bool
+	{
+		return in_array($this->getTable($table), $this->tables);
+	}
+
+	/**
+	 * Update the schema of an existing table.
+	 *
+	 * @param string $table  The table to update.
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 * @throws \Exception If there is an error while updating the schema.
+	 */
+	public function updateSchema(string $table): void
+	{
+		try {
+			$existingColumns = $this->getExistingColumns($table);
+			$expectedColumns = $this->table->fields($table, true);
+
+			$missingColumns = array_diff($expectedColumns, $existingColumns);
+
+			if (!empty($missingColumns))
+			{
+				$this->addMissingColumns($table, $missingColumns);
+			}
+
+			$this->checkColumnsDataType($table, $expectedColumns);
+
+		} catch (\Exception $e) {
+			throw new \Exception("Error: updating schema for $table table. " . $e->getMessage());
+		}
+
+		if (!empty($missingColumns))
+		{
+			$column_s = (count($missingColumns) == 1) ? 'column' : 'columns';
+			$missingColumns = implode(', ', $missingColumns);
+			$this->success[] = "Success: added missing ($missingColumns) $column_s to $table table.";
+		}
+	}
+
 	/**
 	 * Create a table with all necessary fields.
 	 *
@@ -163,55 +231,26 @@
 			$this->db->setQuery($createTableSql);
 			$this->db->execute();
 		} catch (\Exception $e) {
-			throw new \Exception("Error: failed to create missing $table table.", 0, $e);
+			throw new \Exception("Error: failed to create missing $table table. " . $e->getMessage());
 		}
 
 		$this->success[] = "Success: created missing  $table table.";
 	}
 
 	/**
-	 * Update the schema of an existing table.
+	 * Fetch existing columns from a database table.
 	 *
-	 * @param string $table  The table to update.
+	 * @param string $table The name of the table.
 	 *
-	 * @return void
+	 * @return array An array of column names.
-	 * @since  3.2.1
-	 * @throws \Exception If there is an error while updating the schema.
-	 */
-	public function updateSchema(string $table): void
-	{
-		try {
-			$existingColumns = $this->getExistingColumns($table);
-			$expectedColumns = $this->table->fields($table, true);
-
-			$missingColumns = array_diff($expectedColumns, $existingColumns);
-
-			if (!empty($missingColumns))
-			{
-				$this->addMissingColumns($table, $missingColumns);
-			}
-
-			$this->checkColumnsDataType($table, $expectedColumns);
-
-		} catch (\Exception $e) {
-			throw new \Exception("Error: updating schema for $table table.", 0, $e);
-		}
-
-		if (!empty($missingColumns))
-		{
-			$column_s = (count($missingColumns) == 1) ? 'column' : 'columns';
-			$missingColumns = implode(', ', $missingColumns);
-			$this->success[] = "Success: added missing ($missingColumns) $column_s to $table table.";
-		}
-	}
-
-	/**
-	 * Get the targeted component code
-	 *
-	 * @return  string
 	 * @since  3.2.1
 	 */
-	abstract protected function getCode(): string;
+	protected function getExistingColumns(string $table): array
+	{
+		$this->columns = $this->db->getTableColumns($this->getTable($table), false);
+
+		return array_keys($this->columns);
+	}
 
 	/**
 	 * Add missing columns to a table.
@@ -244,7 +283,7 @@
 		} catch (\Exception $e) {
 			$column_s = (count($columns) == 1) ? 'column' : 'columns';
 			$columns = implode(', ', $columns);
-			throw new \Exception("Error: failed to add ($columns) $column_s to $table table.", 0, $e);
+			throw new \Exception("Error: failed to add ($columns) $column_s to $table table. " . $e->getMessage());
 		}
 	}
 
@@ -265,18 +304,20 @@
 			$current = $this->columns[$column] ?? null;
 			if ($current === null || ($expected = $this->table->get($table, $column, 'db')) === null)
 			{
-				// this field is no longer part of the component and can be ignored
 				continue;
 			}
 
 			// check if the data type and size match
-			if (strcasecmp($current->Type, $expected['type']) != 0)
+			if ($this->isDataTypeChangeSignificant($current->Type, $expected['type']))
 			{
 				$requireUpdate[$column] = [
 					'column' => $column,
 					'current' => $current->Type,
 					'expected' => $expected['type']
 				];
+
+				// check if update of default values is needed
+				$this->checkDefault($table, $column);
 			}
 		}
 
@@ -286,6 +327,89 @@
 		}
 	}
 
+	/**
+	 * Generates a SQL snippet for defining a table column, incorporating column type,
+	 *    default value, nullability, and auto-increment properties.
+	 *
+	 * @param string $table The table name to be used.
+	 * @param string $field The field name in the table to generate SQL for.
+	 *
+	 * @return string|null The SQL snippet for the column definition.
+	 * @since 3.2.1
+	 * @throws \Exception If the schema details cannot be retrieved or the SQL statement cannot be constructed properly.
+	 */
+	protected function getColumnDefinition(string $table, string $field): ?string
+	{
+		try {
+			// Retrieve the database schema details for the specified table and field
+			if (($db = $this->table->get($table, $field, 'db')) === null)
+			{
+				return null;
+			}
+
+			// Prepare the column name
+			$column_name = $this->db->quoteName($field);
+			$db['name'] = $field;
+
+			// Prepare the type and default value SQL statement
+			$type = $db['type'] ??  'TEXT';
+			$db_default = isset($db['default']) ? $db['default'] : null;
+			$default = $this->getDefaultValue($type, $db_default);
+
+			// Prepare the null switch, and auto increment statement
+			$null_switch = !empty($db['null_switch']) ? " " . $db['null_switch'] : '';
+			$auto_increment = !empty($db['auto_increment']) ? " AUTO_INCREMENT" : '';
+
+			$this->setKeys($db);
+
+			// Assemble the SQL snippet for the column definition
+			return "{$column_name} {$type}{$null_switch}{$default}{$auto_increment}";
+		} catch (\Exception $e) {
+			throw new \Exception("Error: failed to generate column definition for ($table.$field). " . $e->getMessage());
+		}
+	}
+
+	/**
+	 * Check and Update the default values if needed, including existing data adjustments
+	 *
+	 * @param string $table   The table to update.
+	 * @param string $column  The column/field to check.
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 */
+	protected function checkDefault(string $table, string $column): void
+	{
+		// Retrieve the expected column configuration
+		$expected = $this->table->get($table, $column, 'db');
+
+		// Skip updates if the column is auto_increment
+		if (isset($expected['auto_increment']) && $expected['auto_increment'])
+		{
+			return;
+		}
+
+		// Retrieve the current column configuration
+		$current = $this->columns[$column];
+
+		// Check if default should be empty and current default is null, skip processing
+		if (strtoupper($expected['default']) === 'EMPTY' && $current->Default === NULL)
+		{
+			return;
+		}
+
+		// Determine the new default value based on the expected settings
+		$type = $expected['type'] ??  'TEXT';
+		$db_default = isset($expected['default']) ? $expected['default'] : null;
+		$newDefault = $this->getDefaultValue($type, $db_default, true);
+
+		// First, adjust existing rows to conform to the new default if necessary
+		if (is_numeric($newDefault) && $this->adjustExistingDefaults($table, $column, $current->Default, $newDefault))
+		{
+			$this->success[] = "Success: updated the ($column) defaults in $table table.";
+		}
+	}
+
 	/**
 	 * Update the data type of the given fields.
 	 *
@@ -310,13 +434,120 @@
 
 			if ($this->updateColumnDataType($alterQuery, $table, $column))
 			{
-				$current = (string) $types['current'] ?? 'error';
+				$current = $types['current'] ?? 'error';
-				$expected = (string) $types['expected'] ?? 'error';
+				$expected = $types['expected'] ?? 'error';
 				$this->success[] = "Success: updated ($column) column datatype $current to $expected in $table table.";
 			}
 		}
 	}
 
+	/**
+	 * Add the component name to get the full table name.
+	 *
+	 * @param string $table The table name.
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 */
+	protected function getTable(string $table): string
+	{
+		return $this->prefix . '_' . $table;
+	}
+
+	/**
+	 * Determines if the change in data type between two definitions is significant.
+	 *
+	 * This function checks if there's a significant difference between the current
+	 * data type and the expected data type that would require updating the database schema.
+	 * It ignores size and other modifiers for certain data types where MySQL considers
+	 * these attributes irrelevant for storage.
+	 *
+	 * @param string $currentType   The current data type from the database schema.
+	 * @param string $expectedType  The expected data type to validate against.
+	 *
+	 * @return bool Returns true if the data type change is significant, otherwise false.
+	 * @since  3.2.1
+	 */
+	function isDataTypeChangeSignificant(string $currentType, string $expectedType): bool
+	{
+		// we only do this for Joomla 4+
+		if ($this->currentVersion != 3)
+		{
+			// Normalize both input types to lowercase for case-insensitive comparison
+			$currentType = strtolower($currentType);
+			$expectedType = strtolower($expectedType);
+
+			// Define types where size or other modifiers are irrelevant
+			$sizeIrrelevantTypes = [
+				'int', 'tinyint', 'smallint', 'mediumint', 'bigint', // Standard integer types
+				'int unsigned', 'tinyint unsigned', 'smallint unsigned', 'mediumint unsigned', 'bigint unsigned', // Unsigned integer types
+			];
+
+			// Check if the type involves size-irrelevant types
+			foreach ($sizeIrrelevantTypes as $type)
+			{
+				if (strpos($expectedType, $type) !== false)
+				{
+					// Remove any numeric sizes and modifiers for comparison
+					$pattern = '/\(\d+\)|unsigned|\s*/';
+					$cleanCurrentType = preg_replace($pattern, '', $currentType);
+					$cleanExpectedType = preg_replace($pattern, '', $expectedType);
+
+					// Compare the cleaned types
+					if ($cleanCurrentType === $cleanExpectedType)
+					{
+						return false; // No significant change
+					}
+				}
+			}
+		}
+
+		// Perform a standard case-insensitive comparison for other types
+		if (strcasecmp($currentType, $expectedType) == 0)
+		{
+			return false; // No significant change
+		}
+
+		return true; // Significant datatype change detected
+	}
+
+	/**
+	 * Updates existing rows in a column to a new default value
+	 *
+	 * @param string $table           The table to update.
+	 * @param string $column          The column to update.
+	 * @param mixed  $currentDefault  Current default value.
+	 * @param mixed  $newDefault      The new default value to be set.
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 * @throws \Exception If there is an error updating column defaults.
+	 */
+	protected function adjustExistingDefaults(string $table, string $column, $currentDefault, $newDefault): bool
+	{
+		// Determine if adjustment is needed based on new and current defaults
+		if ($newDefault !== $currentDefault)
+		{
+			try {
+				// Format the new default for SQL use
+				$sqlDefault = $this->db->quote($newDefault);
+
+				$updateTable = 'UPDATE ' . $this->db->quoteName($this->getTable($table));
+				$dbField = $this->db->quoteName($column);
+
+				// Update SQL to set new default on existing rows where the default is currently the old default
+				$sql = $updateTable . " SET $dbField = $sqlDefault WHERE $dbField IS NULL OR $dbField = ''";
+
+				// Execute the update
+				$this->db->setQuery($sql);
+				return $this->db->execute();
+			} catch (\Exception $e) {
+				throw new \Exception("Error: failed to update ($column) column defaults in $table table. " . $e->getMessage());
+			}
+		}
+		return false;
+	}
+
 	/**
 	 * Update the data type of the given field.
 	 *
@@ -334,7 +565,7 @@
 			$this->db->setQuery($updateString);
 			return $this->db->execute();
 		} catch (\Exception $e) {
-			throw new \Exception("Error: failed to update the datatype of ($field) column in $table table.", 0, $e);
+			throw new \Exception("Error: failed to update the datatype of ($field) column in $table table. " . $e->getMessage());
 		}
 	}
 
@@ -362,6 +593,20 @@
 		return implode(', ', $keys);
 	}
 
+	/**
+	 * Function to set the view keys
+	 *
+	 * @param string $column The field column database array values
+	 *
+	 * @return void
+	 * @since  3.2.1
+	 */
+	protected function setKeys(array $column): void
+	{
+		$this->setUniqueKey($column);
+		$this->setKey($column);
+	}
+
 	/**
 	 * Function to set the unique key
 	 *
@@ -397,95 +642,32 @@
 	}
 
 	/**
-	 * Add the component name to get the full table name.
+	 * Adjusts the default value SQL fragment for a database field based on its type and specific rules.
 	 *
-	 * @param string $table The table name.
+	 * If the field is of type DATETIME and the Joomla version is not 3, it sets the default to CURRENT_TIMESTAMP
+	 * if not explicitly specified otherwise. For all other types, or when a 'EMPTY' default is specified, it handles
+	 * defaults by either leaving them unset or applying the provided default, properly quoted for SQL safety.
 	 *
-	 * @return void
+	 * @param string	   $type          The type of the database field (e.g., 'DATETIME').
+	 * @param string|null  $defaultValue  Optional default value for the field, null if not provided.
+	 * @param bool         $pure          Optional to add the 'DEFAULT' string or not.
+	 *
+	 * @return string      The SQL fragment to set the default value for a field.
 	 * @since 3.2.1
 	 */
-	protected function getTable(string $table): string
+	protected function getDefaultValue(string $type, ?string $defaultValue, bool $pure = false): string
 	{
-		return $this->prefix . '_' . $table;
+		if ($defaultValue === null || strtoupper($defaultValue) === 'EMPTY')
-	}
-
-	/**
-	 * Check if a table exists in the database.
-	 *
-	 * @param string $table The name of the table to check.
-	 *
-	 * @return bool True if table exists, False otherwise.
-	 * @since  3.2.1
-	 */
-	private function tableExists(string $table): bool
 		{
-		return in_array($this->getTable($table), $this->tables);
+			return '';
 		}
 
-	/**
+		// Set default for DATETIME fields in Joomla versions above 3
-	 * Fetch existing columns from a database table.
+		if (strtoupper($type) === 'DATETIME' && $this->currentVersion != 3)
-	 *
-	 * @param string $table The name of the table.
-	 *
-	 * @return array An array of column names.
-	 * @since  3.2.1
-	 */
-	private function getExistingColumns(string $table): array
 		{
-		$this->columns = $this->db->getTableColumns($this->getTable($table), false);
+			return $pure ? "CURRENT_TIMESTAMP" : " DEFAULT CURRENT_TIMESTAMP";
-
-		return array_keys($this->columns);
 		}
 
-	/**
+		// Apply and quote the default value
-	 * Generates a SQL snippet for defining a table column, incorporating column type,
+		return $pure ? $defaultValue : " DEFAULT " . $this->db->quote($defaultValue);
-	 *    default value, nullability, and auto-increment properties.
-	 *
-	 * @param string $table The table name to be used.
-	 * @param string $field The field name in the table to generate SQL for.
-	 *
-	 * @return string|null The SQL snippet for the column definition.
-	 * @since 3.2.1
-	 * @throws \Exception If the schema details cannot be retrieved or the SQL statement cannot be constructed properly.
-	 */
-	private function getColumnDefinition(string $table, string $field): ?string
-	{
-		try {
-			// Retrieve the database schema details for the specified table and field
-			if (($db = $this->table->get($table, $field, 'db')) === null)
-			{
-				return null;
-			}
-
-			// Prepare the column name
-			$column_name = $this->db->quoteName($field);
-			$db['name'] = $field;
-
-			// Prepare the default value SQL, null switch, and auto increment statement
-			$default = !empty($db['default']) ? " DEFAULT " . $this->db->quote($db['default']) : '';
-			$null_switch = !empty($db['null_switch']) ? " " . $db['null_switch'] : '';
-			$auto_increment = !empty($db['auto_increment']) ? " AUTO_INCREMENT" : '';
-			$type = !empty($db['type']) ? $db['type'] : 'TEXT';
-
-			$this->setKeys($db);
-
-			// Assemble the SQL snippet for the column definition
-			return "{$column_name} {$type}{$default}{$null_switch}{$auto_increment}";
-		} catch (\Exception $e) {
-			throw new \Exception("Error: failed to generate column definition for $table.$field", 0, $e);
-		}
-	}
-
-	/**
-	 * Function to set the view keys
-	 *
-	 * @param string $column The field column database array values
-	 *
-	 * @return void
-	 * @since  3.2.1
-	 */
-	private function setKeys(array $column): void
-	{
-		$this->setUniqueKey($column);
-		$this->setKey($column);
 	}

src/f3c04c28-bce4-422e-be93-7d163e4e342b/settings.json

@@ -20,6 +20,6 @@
     "namespace": "[[[NamespacePrefix]]]\\Joomla\\Abstraction.Schema",
     "description": "Schema Checking\r\n\r\n@since 3.2.1",
     "licensing_template": "\/**\r\n * @package    Joomla.Component.Builder\r\n *\r\n * @created    4th September, 2022\r\n * @author     Llewellyn van der Merwe <https:\/\/dev.vdm.io>\r\n * @git        Joomla Component Builder <https:\/\/git.vdm.dev\/joomla\/Component-Builder>\r\n * @copyright  Copyright (C) 2015 Vast Development Method. All rights reserved.\r\n * @license    GNU General Public License version 2 or later; see LICENSE.txt\r\n *\/\r\n",
-    "head": "use Joomla\\CMS\\Factory;",
+    "head": "use Joomla\\CMS\\Factory;\r\nuse Joomla\\CMS\\Version;",
     "composer": ""
 }