Package liquibase.change.core
Class EmptyChange
- java.lang.Object
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- liquibase.AbstractExtensibleObject
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- liquibase.plugin.AbstractPlugin
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- liquibase.change.AbstractChange
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- liquibase.change.core.EmptyChange
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- All Implemented Interfaces:
Cloneable
,Change
,ExtensibleObject
,Plugin
,LiquibaseSerializable
public class EmptyChange extends AbstractChange
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Nested Class Summary
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Nested classes/interfaces inherited from interface liquibase.serializer.LiquibaseSerializable
LiquibaseSerializable.SerializationType
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Field Summary
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Fields inherited from class liquibase.change.AbstractChange
NODENAME_COLUMN
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Fields inherited from interface liquibase.change.Change
EMPTY_CHANGE, SHOULD_EXECUTE
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Fields inherited from interface liquibase.serializer.LiquibaseSerializable
GENERIC_CHANGELOG_EXTENSION_NAMESPACE, GENERIC_SNAPSHOT_EXTENSION_NAMESPACE, STANDARD_CHANGELOG_NAMESPACE, STANDARD_SNAPSHOT_NAMESPACE
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Fields inherited from interface liquibase.plugin.Plugin
PRIORITY_DATABASE, PRIORITY_DEFAULT, PRIORITY_NOT_APPLICABLE, PRIORITY_SPECIALIZED
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Constructor Summary
Constructors Constructor Description EmptyChange()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected Change[]
createInverses()
Create inverse changes that can roll back this change.SqlStatement[]
generateStatements(Database database)
Generates theSqlStatement
objects required to run the change for the given database.String
getConfirmationMessage()
Confirmation message to be displayed after the change is executed.String
getSerializedObjectNamespace()
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Methods inherited from class liquibase.change.AbstractChange
checkStatus, 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
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Methods inherited from class liquibase.AbstractExtensibleObject
clone, describe, get, get, get, getAttributes, getFieldValue, getObjectMetaData, getValuePath, has, set
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Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface liquibase.ExtensibleObject
clone, describe, get, get, getAttributes, getObjectMetaData, getValuePath, has, set
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Method Detail
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generateStatements
public SqlStatement[] generateStatements(Database database)
Description copied from interface:Change
Generates theSqlStatement
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 fromChange.generateStatementsVolatile(liquibase.database.Database)
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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.
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getSerializedObjectNamespace
public String getSerializedObjectNamespace()
- Specified by:
getSerializedObjectNamespace
in interfaceLiquibaseSerializable
- Overrides:
getSerializedObjectNamespace
in classAbstractChange
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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. IfAbstractChange.generateRollbackStatements(liquibase.database.Database)
is overridden, this method may not be called.- Overrides:
createInverses
in classAbstractChange
- 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
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