org.apache.ambari.server.orm.helpers.dbms

Class DerbyHelper

java.lang.Object

org.apache.ambari.server.orm.helpers.dbms.GenericDbmsHelper

org.apache.ambari.server.orm.helpers.dbms.DerbyHelper

All Implemented Interfaces:

DbmsHelper

public class DerbyHelper
extends GenericDbmsHelper

Field Summary

Fields inherited from class org.apache.ambari.server.orm.helpers.dbms.GenericDbmsHelper

databasePlatform

Constructor Summary

Constructors

Constructor and Description
DerbyHelper(org.eclipse.persistence.platform.database.DatabasePlatform databasePlatform)

Method Summary

Modifier and Type	Method and Description
String	getRenameColumnStatement(String tableName, String oldName, DBAccessor.DBColumnInfo columnInfo) Generate rename column statement
boolean	supportsColumnTypeChange() Check if column type can be modified directly
StringBuilder	writeColumnModifyString(StringBuilder builder, DBAccessor.DBColumnInfo columnInfo)

Methods inherited from class org.apache.ambari.server.orm.helpers.dbms.GenericDbmsHelper

convertToFieldDefinition, createStubAbstractSessionFromPlatform, getAddColumnStatement, getAddForeignKeyStatement, getAlterColumnStatement, getCreateIndexStatement, getCreateTableStatement, getDropConstraintStatement, getDropSequenceStatement, getDropTableStatement, getRenameColumnStatement, writeAlterTableClause, writeColumnRenameString, writeColumnType, writeCreateTableStatement

Methods inherited from class java.lang.Object

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

Constructor Detail

DerbyHelper

public DerbyHelper(org.eclipse.persistence.platform.database.DatabasePlatform databasePlatform)

Method Detail

supportsColumnTypeChange

public boolean supportsColumnTypeChange()

Description copied from interface: DbmsHelper

Check if column type can be modified directly

Specified by:

supportsColumnTypeChange in interface DbmsHelper

Overrides:

supportsColumnTypeChange in class GenericDbmsHelper

Returns:

getRenameColumnStatement

public String getRenameColumnStatement(String tableName,
                                       String oldName,
                                       DBAccessor.DBColumnInfo columnInfo)

Description copied from interface: DbmsHelper

Generate rename column statement

Specified by:

getRenameColumnStatement in interface DbmsHelper

Overrides:

getRenameColumnStatement in class GenericDbmsHelper

columnInfo - definition of new column

Returns:

writeColumnModifyString

public StringBuilder writeColumnModifyString(StringBuilder builder,
                                             DBAccessor.DBColumnInfo columnInfo)

Overrides:

writeColumnModifyString in class GenericDbmsHelper