Package liquibase.sqlgenerator.core

Class TableIsEmptyGenerator

java.lang.Object

liquibase.sqlgenerator.core.AbstractSqlGenerator<TableIsEmptyStatement>

liquibase.sqlgenerator.core.TableIsEmptyGenerator

All Implemented Interfaces:

PrioritizedService, SqlGenerator<TableIsEmptyStatement>

public class TableIsEmptyGenerator
extends AbstractSqlGenerator<TableIsEmptyStatement>

Field Summary

Fields inherited from interface liquibase.servicelocator.PrioritizedService

COMPARATOR

Fields inherited from interface liquibase.sqlgenerator.SqlGenerator

EMPTY_SQL, PRIORITY_DATABASE, PRIORITY_DEFAULT

Constructor Summary

Constructors

Constructor	Description
TableIsEmptyGenerator()

Method Summary

Modifier and Type	Method	Description
protected String	generateCountSql(TableIsEmptyStatement statement, Database database)
Sql[]	generateSql(TableIsEmptyStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain)	Generate the actual Sql for the given statement and database.
int	getPriority()	Of all the SqlGenerators that "support" a given SqlStatement/Database, SqlGeneratorFactory will return the one with the highest priority.
boolean	supports(TableIsEmptyStatement statement, Database database)	Does this generator support the given statement/database combination?
ValidationErrors	validate(TableIsEmptyStatement tableIsEmptyStatement, Database database, SqlGeneratorChain sqlGeneratorChain)	Validate the data contained in the SqlStatement.

Methods inherited from class liquibase.sqlgenerator.core.AbstractSqlGenerator

generateRollbackStatementsIsVolatile, generateStatementsIsVolatile, looksLikeFunctionCall, warn

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TableIsEmptyGenerator

public TableIsEmptyGenerator()

Method Details

getPriority

public int getPriority()

Description copied from interface: SqlGenerator

Of all the SqlGenerators that "support" a given SqlStatement/Database, SqlGeneratorFactory will return the one with the highest priority.

Specified by:

getPriority in interface PrioritizedService

Specified by:

getPriority in interface SqlGenerator<TableIsEmptyStatement>

Overrides:

getPriority in class AbstractSqlGenerator<TableIsEmptyStatement>

supports

public boolean supports(TableIsEmptyStatement statement,
 Database database)

Description copied from interface: SqlGenerator

Does this generator support the given statement/database combination? Do not validate the statement with this method, only return if it can support it.

Specified by:

supports in interface SqlGenerator<TableIsEmptyStatement>

Overrides:

supports in class AbstractSqlGenerator<TableIsEmptyStatement>

validate

public ValidationErrors validate(TableIsEmptyStatement tableIsEmptyStatement,
 Database database,
 SqlGeneratorChain sqlGeneratorChain)

Description copied from interface: SqlGenerator

Validate the data contained in the SqlStatement. If there are no errors, return an empty ValidationErrors object, not a null value. Liquibase will inspect the ValidationErrors result before attempting to call generateSql.

generateCountSql

protected String generateCountSql(TableIsEmptyStatement statement,
 Database database)

generateSql

public Sql[] generateSql(TableIsEmptyStatement statement,
 Database database,
 SqlGeneratorChain sqlGeneratorChain)

Description copied from interface: SqlGenerator

Generate the actual Sql for the given statement and database.