Package liquibase.change.core

Class AddColumnChange

java.lang.Object

liquibase.AbstractExtensibleObject

liquibase.plugin.AbstractPlugin

liquibase.change.AbstractChange

liquibase.change.core.AddColumnChange

All Implemented Interfaces:

Cloneable, Change, ChangeWithColumns<AddColumnConfig>, ExtensibleObject, Plugin, LiquibaseSerializable

public class AddColumnChange
extends AbstractChange
implements ChangeWithColumns<AddColumnConfig>

Adds a column to an existing table.

Nested Class Summary

Nested classes/interfaces inherited from interface liquibase.serializer.LiquibaseSerializable

LiquibaseSerializable.SerializationType

Field Summary

Fields inherited from class liquibase.change.AbstractChange

NODENAME_COLUMN

Fields inherited from interface liquibase.change.Change

EMPTY_CHANGE, SHOULD_EXECUTE

Fields inherited from interface liquibase.serializer.LiquibaseSerializable

GENERIC_CHANGELOG_EXTENSION_NAMESPACE, GENERIC_SNAPSHOT_EXTENSION_NAMESPACE, STANDARD_CHANGELOG_NAMESPACE, STANDARD_SNAPSHOT_NAMESPACE

Fields inherited from interface liquibase.plugin.Plugin

PRIORITY_DATABASE, PRIORITY_DEFAULT, PRIORITY_NOT_APPLICABLE, PRIORITY_SPECIALIZED

Constructor Summary

Constructors

Constructor	Description
AddColumnChange()

Method Summary

Modifier and Type	Method	Description
void	addColumn(AddColumnConfig column)	Add a column configuration to the Change.
ChangeStatus	checkStatus(Database database)	Validate that this change executed successfully against the given database.
protected Change[]	createInverses()	Create inverse changes that can roll back this change.
SqlStatement[]	generateStatements(Database database)	Generates the SqlStatement objects required to run the change for the given database.
String	getCatalogName()
List<AddColumnConfig>	getColumns()	Return all the ColumnConfig objects defined for this Change
String	getConfirmationMessage()	Confirmation message to be displayed after the change is executed.
String	getSchemaName()
String	getSerializedObjectNamespace()
String	getTableName()
void	modify(ChangeVisitor changeVisitor)
void	removeColumn(ColumnConfig column)
void	setColumns(List<AddColumnConfig> columns)

Methods inherited from class liquibase.change.AbstractChange

createAlternateParameterNames, createChangeMetaData, createChangeParameterMetadata, createDescriptionMetaData, createEmptyColumnConfig, createExampleValueMetaData, createMustEqualExistingMetaData, createRequiredDatabasesMetaData, createSerializationTypeMetaData, createSinceMetaData, createSupportedDatabasesMetaData, customLoadLogic, equals, finishInitialization, generateCheckSum, generateRollbackStatements, generateRollbackStatementsVolatile, generateStatementsVolatile, getAffectedDatabaseObjects, getChangeSet, getDescription, getExcludedFieldFilters, getResourceAccessor, getSerializableFieldNamespace, getSerializableFields, getSerializableFieldType, getSerializableFieldValue, getSerializedObjectName, hashCode, isInvalidProperty, load, serialize, serializeValue, setChangeSet, setResourceAccessor, shouldExecuteChange, supports, supportsRollback, toString, validate, warn

Methods inherited from class liquibase.AbstractExtensibleObject

clone, describe, get, get, get, getAttributes, getFieldValue, getObjectMetaData, getValuePath, has, set

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface liquibase.ExtensibleObject

clone, describe, get, get, getAttributes, getObjectMetaData, getValuePath, has, set

Constructor Details

AddColumnChange

public AddColumnChange()

Method Details

getCatalogName

public String getCatalogName()

getSchemaName

public String getSchemaName()

getTableName

public String getTableName()

getColumns

public List<AddColumnConfig> getColumns()

Description copied from interface: ChangeWithColumns

Return all the ColumnConfig objects defined for this Change

Specified by:

getColumns in interface ChangeWithColumns<AddColumnConfig>

setColumns

public void setColumns(List<AddColumnConfig> columns)

Specified by:

setColumns in interface ChangeWithColumns<AddColumnConfig>

addColumn

public void addColumn(AddColumnConfig column)

Description copied from interface: ChangeWithColumns

Add a column configuration to the Change.

Specified by:

addColumn in interface ChangeWithColumns<AddColumnConfig>

removeColumn

public void removeColumn(ColumnConfig column)

generateStatements

public SqlStatement[] generateStatements(Database database)

Description copied from interface: Change

Generates the SqlStatement objects required to run the change for the given database.

NOTE: This method may be called multiple times throughout the changelog execution process and may be called in documentation generation and other integration points as well.

If this method reads from the current database state or uses any other logic that will be affected by whether previous changeSets have ran or not, you must return true from Change.generateStatementsVolatile(liquibase.database.Database).

Specified by:

generateStatements in interface Change

createInverses

protected Change[] createInverses()

Description copied from class: AbstractChange

Create inverse changes that can roll back this change. This method is intended to be overridden by Change implementations that have a logical inverse operation. Default implementation returns null.

If AbstractChange.generateRollbackStatements(liquibase.database.Database) is overridden, this method may not be called.

Overrides:

createInverses in class AbstractChange

Returns:

Return null if there is no corresponding inverse and therefore automatic rollback is not possible. Return an empty array to have a no-op rollback.

See Also:

• #supportsRollback

checkStatus

public ChangeStatus checkStatus(Database database)

Description copied from interface: Change

Validate that this change executed successfully against the given database. This will check that the update completed at a high level plus check details of the change. For example, a change to add a column will check that the column exists plus data type, default values, etc.

Specified by:

checkStatus in interface Change

Overrides:

checkStatus in class AbstractChange

getConfirmationMessage

public String getConfirmationMessage()

Description copied from interface: Change

Confirmation message to be displayed after the change is executed. Should include relevant configuration settings to make it as helpful as possible. This method may be called outside the changelog execution process, such as in documentation generation.

Specified by:

getConfirmationMessage in interface Change

getSerializedObjectNamespace

public String getSerializedObjectNamespace()

Specified by:

getSerializedObjectNamespace in interface LiquibaseSerializable

Overrides:

getSerializedObjectNamespace in class AbstractChange

modify

public void modify(ChangeVisitor changeVisitor)
            throws ParsedNodeException

Specified by:

modify in interface Change

Overrides:

modify in class AbstractChange

Throws:

ParsedNodeException - if there is an error processing ChangeVisitor