Package liquibase.sqlgenerator.core

Class CreateIndexGenerator

java.lang.Object

liquibase.sqlgenerator.core.AbstractSqlGenerator<CreateIndexStatement>

liquibase.sqlgenerator.core.CreateIndexGenerator

All Implemented Interfaces:

PrioritizedService, SqlGenerator<CreateIndexStatement>

Direct Known Subclasses:

CreateIndexGeneratorFirebird, CreateIndexGeneratorPostgres

public class CreateIndexGenerator
extends AbstractSqlGenerator<CreateIndexStatement>

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
CreateIndexGenerator()

Method Summary

Modifier and Type	Method	Description
Sql[]	generateSql(CreateIndexStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain)	Generate a CREATE INDEX SQL statement.
protected Index	getAffectedIndex(CreateIndexStatement statement)
ValidationErrors	validate(CreateIndexStatement createIndexStatement, Database database, SqlGeneratorChain sqlGeneratorChain)	Validate the data contained in the SqlStatement.
Warnings	warn(CreateIndexStatement createIndexStatement, Database database, SqlGeneratorChain sqlGeneratorChain)

Methods inherited from class liquibase.sqlgenerator.core.AbstractSqlGenerator

generateRollbackStatementsIsVolatile, generateStatementsIsVolatile, getPriority, looksLikeFunctionCall, supports

Methods inherited from class java.lang.Object

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

Constructor Detail

CreateIndexGenerator

public CreateIndexGenerator()

Method Detail

validate

public ValidationErrors validate(CreateIndexStatement createIndexStatement,
                                 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.

warn

public Warnings warn(CreateIndexStatement createIndexStatement,
                     Database database,
                     SqlGeneratorChain sqlGeneratorChain)

Specified by:

warn in interface SqlGenerator<CreateIndexStatement>

Overrides:

warn in class AbstractSqlGenerator<CreateIndexStatement>

generateSql

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

Generate a CREATE INDEX SQL statement. Here, we are walking on thin ice, because the SQL Foundation standard (ISO/IEC 9075-2) does not concern itself with indexes at all and leaves them as an implementation-specific detail at the discretion of each RDBMS vendor. However, there is some common ground to most RDBMS, and we try to make an educated guess on how a CREATE INDEX statement might look like if we have no specific handler for the DBMS.

Parameters:

statement - A CreateIndexStatement with the desired properties of the SQL to be generated

database - The DBMS for whose SQL dialect the statement is to be made

sqlGeneratorChain - The other SQL generators in the same chain (but this method is not interested in them)

Returns:

An array of Sql objects containing the generated SQL statement(s).

getAffectedIndex

protected Index getAffectedIndex(CreateIndexStatement statement)