Package io.ebeaninternal.dbmigration.ddlgeneration.platform

Class AbstractHanaDdl

java.lang.Object

io.ebeaninternal.dbmigration.ddlgeneration.platform.PlatformDdl

io.ebeaninternal.dbmigration.ddlgeneration.platform.AbstractHanaDdl

Direct Known Subclasses:

HanaColumnStoreDdl, HanaRowStoreDdl

public abstract class AbstractHanaDdl
extends PlatformDdl

Constructor Summary

Constructors

Constructor	Description
AbstractHanaDdl(io.ebean.config.dbplatform.DatabasePlatform platform)

Method Summary

Modifier and Type	Method	Description
String	alterColumnBaseAttributes(AlterColumn alter)	Alter column setting both the type and not null constraint.
String	alterColumnDefaultValue(String tableName, String columnName, String defaultValue)	Alter column setting the default value.
String	alterColumnNotnull(String tableName, String columnName, boolean notnull)	Alter a column adding or removing the not null constraint.
String	alterColumnType(String tableName, String columnName, String type)	Alter a column type.
String	alterTableAddUniqueConstraint(String tableName, String uqName, String[] columns, String[] nullableColumns)	Add a unique constraint to the table.
void	alterTableDropColumn(DdlBuffer buffer, String tableName, String columnName)	It is rather complex to delete a column on HANA as there must not exist any foreign keys.
String	alterTableDropConstraint(String tableName, String constraintName)	Drop a unique constraint from the table.
String	alterTableDropUniqueConstraint(String tableName, String uniqueConstraintName)	Drop a unique constraint from the table (Sometimes this is an index).
DdlHandler	createDdlHandler(io.ebean.config.DatabaseConfig config)	Create a DdlHandler for the specific database platform.

Methods inherited from class io.ebeaninternal.dbmigration.ddlgeneration.platform.PlatformDdl

addColumnComment, addHistoryTable, addTableComment, addTablePartition, alterTableAddCheckConstraint, alterTableAddColumn, alterTableAddForeignKey, alterTableDropForeignKey, asIdentityColumn, configure, convert, convertDefaultValue, createCheckConstraint, createIndex, createSequence, createWithHistory, dropHistoryTable, dropIndex, dropIndex, dropSequence, dropTable, generateEpilog, generateProlog, getCreateTableCommandPrefix, getPlatform, getUpdateNullWithDefault, inlineTableComment, isIncludeStorageEngine, isInlineComments, isInlineForeignKeys, isInlineUniqueWhenNullable, lockTables, regenerateHistoryTriggers, setLockTimeout, suppressPrimaryKeyOnPartition, tableInlineForeignKey, tableStorageEngine, unlockTables, useIdentityType, writeTableColumns

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractHanaDdl

public AbstractHanaDdl(io.ebean.config.dbplatform.DatabasePlatform platform)

Method Details

alterColumnBaseAttributes

public String alterColumnBaseAttributes(AlterColumn alter)

Description copied from class: PlatformDdl

Alter column setting both the type and not null constraint.

Used by MySql, SQL Server, and HANA as these require both column attributes to be set together.

Overrides:

alterColumnBaseAttributes in class PlatformDdl

alterColumnDefaultValue

public String alterColumnDefaultValue(String tableName,
 String columnName,
 String defaultValue)

Description copied from class: PlatformDdl

Alter column setting the default value.

Overrides:

alterColumnDefaultValue in class PlatformDdl

alterColumnNotnull

public String alterColumnNotnull(String tableName,
 String columnName,
 boolean notnull)

Description copied from class: PlatformDdl

Alter a column adding or removing the not null constraint.

Note that that MySql, SQL Server, and HANA instead use alterColumnBaseAttributes()

Overrides:

alterColumnNotnull in class PlatformDdl

createDdlHandler

public DdlHandler createDdlHandler(io.ebean.config.DatabaseConfig config)

Description copied from class: PlatformDdl

Create a DdlHandler for the specific database platform.

Overrides:

createDdlHandler in class PlatformDdl

alterColumnType

public String alterColumnType(String tableName,
 String columnName,
 String type)

Description copied from class: PlatformDdl

Alter a column type.

Note that that MySql and SQL Server instead use alterColumnBaseAttributes()

Overrides:

alterColumnType in class PlatformDdl

alterTableAddUniqueConstraint

public String alterTableAddUniqueConstraint(String tableName,
 String uqName,
 String[] columns,
 String[] nullableColumns)

Description copied from class: PlatformDdl

Add a unique constraint to the table.

Overridden by MsSqlServer for specific null handling on unique constraints.

Overrides:

alterTableAddUniqueConstraint in class PlatformDdl

alterTableDropUniqueConstraint

public String alterTableDropUniqueConstraint(String tableName,
 String uniqueConstraintName)

Description copied from class: PlatformDdl

Drop a unique constraint from the table (Sometimes this is an index).

Overrides:

alterTableDropUniqueConstraint in class PlatformDdl

alterTableDropConstraint

public String alterTableDropConstraint(String tableName,
 String constraintName)

Description copied from class: PlatformDdl

Drop a unique constraint from the table.

Overrides:

alterTableDropConstraint in class PlatformDdl

alterTableDropColumn

public void alterTableDropColumn(DdlBuffer buffer,
 String tableName,
 String columnName)
                          throws IOException

It is rather complex to delete a column on HANA as there must not exist any foreign keys. That's why we call a user stored procedure here

Overrides:

alterTableDropColumn in class PlatformDdl

Throws:

IOException