org.hibernate.dialect

Class SybaseASE15Dialect

java.lang.Object

org.hibernate.dialect.Dialect

org.hibernate.dialect.SybaseDialect

org.hibernate.dialect.SybaseASE15Dialect

All Implemented Interfaces:

ConversionContext

Direct Known Subclasses:

SybaseASE157Dialect

public class SybaseASE15Dialect
extends SybaseDialect

An SQL dialect targeting Sybase Adaptive Server Enterprise (ASE) 15 and higher.

TODO : verify if this also works with 12/12.5

Field Summary

Fields inherited from class org.hibernate.dialect.Dialect

CLOSED_QUOTE, DEFAULT_BATCH_SIZE, LEGACY_LOB_MERGE_STRATEGY, NEW_LOCATOR_LOB_MERGE_STRATEGY, NO_BATCH, QUOTE, STANDARD_DEFAULT_BATCH_LOAD_SIZING_STRATEGY, STREAM_XFER_LOB_MERGE_STRATEGY

Constructor Summary

Constructors

Constructor and Description
SybaseASE15Dialect() Constructs a SybaseASE15Dialect

Method Summary

Modifier and Type	Method and Description
java.lang.String	appendLockHint(LockOptions lockOptions, java.lang.String tableName) Some dialects support an alternative means to SELECT FOR UPDATE, whereby a "lock hint" is appends to the table name in the from clause.
java.lang.String	applyLocksToSql(java.lang.String sql, LockOptions aliasedLockOptions, java.util.Map<java.lang.String,java.lang.String[]> keyColumnNames) Modifies the given SQL by applying the appropriate updates for the specified lock modes and key columns.
boolean	areStringComparisonsCaseInsensitive() By default, Sybase string comparisons are case-insensitive.
boolean	doesReadCommittedCauseWritersToBlockReaders() For the underlying database, is READ_COMMITTED isolation implemented by forcing readers to wait for write locks to be released?
boolean	doesRepeatableReadCauseReadersToBlockWriters() For the underlying database, is REPEATABLE_READ isolation implemented by forcing writers to wait for read locks to be released?
java.lang.String	getAddColumnString() The syntax used to add a column to a table (optional).
java.lang.String	getCrossJoinSeparator() Returns the separator to use for defining cross joins when translating HQL queries.
java.lang.String	getCurrentTimestampSelectString() Retrieve the command used to retrieve the current timestamp from the database.
java.lang.String	getCurrentTimestampSQLFunctionName() The name of the database-specific SQL function for retrieving the current timestamp.
MultiTableBulkIdStrategy	getDefaultMultiTableBulkIdStrategy()
java.lang.String	getForUpdateString() Get the string to append to SELECT statements to acquire locks for this dialect.
IdentityColumnSupport	getIdentityColumnSupport() Get the appropriate IdentityColumnSupport
int	getMaxAliasLength() What is the maximum length Hibernate can use for generated aliases? The maximum here should account for the fact that Hibernate often needs to append "uniqueing" information to the end of generated aliases.
java.sql.ResultSet	getResultSet(java.sql.CallableStatement ps) Given a callable statement previously processed by Dialect.registerResultSetOutParameter(java.sql.CallableStatement, int), extract the ResultSet from the OUT parameter.
java.lang.String	getSelectGUIDString() Get the command used to select a GUID from the underlying database.
protected SqlTypeDescriptor	getSqlTypeDescriptorOverride(int sqlCode) Returns the SqlTypeDescriptor that should be used to handle the given JDBC type code.
boolean	isCurrentTimestampSelectStringCallable() Should the value returned by Dialect.getCurrentTimestampSelectString() be treated as callable.
boolean	qualifyIndexName() Do we need to qualify index names with the schema name?
int	registerResultSetOutParameter(java.sql.CallableStatement statement, int col) Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning ResultSet *by position*.
boolean	supportsCascadeDelete() Does this dialect support cascaded delete on foreign key definitions?
boolean	supportsCurrentTimestampSelection() Does this dialect support a way to retrieve the database's current timestamp value?
boolean	supportsEmptyInList() Does this dialect support empty IN lists? For example, is [where XYZ in ()] a supported construct?
boolean	supportsExistsInSelect() Does the dialect support an exists statement in the select clause?
boolean	supportsExpectedLobUsagePattern() Actually Sybase does not support LOB locators at al.
boolean	supportsLockTimeouts() Informational metadata about whether this dialect is known to support specifying timeouts for requested lock acquisitions.
boolean	supportsTupleDistinctCounts() Does this dialect support `count(distinct a,b)`?
boolean	supportsTuplesInSubqueries() Does this dialect support tuples in subqueries? Ex: delete from Table1 where (col1, col2) in (select col1, col2 from Table2)
boolean	supportsUnionAll() Does this dialect support UNION ALL, which is generally a faster variant of UNION?

Methods inherited from class org.hibernate.dialect.SybaseDialect

getInExpressionCountLimit, getNullColumnString

Methods inherited from class org.hibernate.dialect.Dialect

appendLockHint, bindLimitParametersFirst, bindLimitParametersInReverseOrder, buildIdentifierHelper, buildSQLExceptionConversionDelegate, buildSQLExceptionConverter, canCreateCatalog, canCreateSchema, cast, cast, cast, closeQuote, contributeTypes, convertToFirstRowValue, createCaseFragment, createOuterJoinFragment, defaultScrollMode, dropConstraints, forceLimitUsage, forceLobAsLastValue, forUpdateOfColumns, getAddColumnSuffixString, getAddForeignKeyConstraintString, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAddUniqueConstraintString, getAuxiliaryDatabaseObjectExporter, getCallableStatementSupport, getCascadeConstraintsString, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateCatalogCommand, getCreateMultisetTableString, getCreateSchemaCommand, getCreateSequenceString, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCurrentSchemaCommand, getDefaultBatchLoadSizingStrategy, getDefaultProperties, getDialect, getDialect, getDropCatalogCommand, getDropForeignKeyString, getDropSchemaCommand, getDropSequenceString, getDropSequenceStrings, getDropTableString, getForeignKeyExporter, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateSkipLockedString, getForUpdateSkipLockedString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIndexExporter, getKeywords, getLimitHandler, getLimitString, getLimitString, getLobMergeStrategy, getLockingStrategy, getLowercaseFunction, getNameQualifierSupport, getNativeIdentifierGeneratorClass, getNativeIdentifierGeneratorStrategy, getNoColumnsInsertString, getNotExpression, getQueryHintString, getQuerySequencesString, getReadLockString, getResultSet, getResultSet, getSchemaNameResolver, getSelectClauseNullString, getSelectSequenceNextValString, getSequenceExporter, getSequenceInformationExtractor, getSequenceNextValString, getTableComment, getTableExporter, getTableTypeString, getTypeName, getTypeName, getUniqueDelegate, getUniqueKeyExporter, getViolatedConstraintNameExtracter, getWriteLockString, hasAlterTable, hasSelfReferentialForeignKeyBug, isJdbcLogWarningsEnabledByDefault, isLockTimeoutParameterized, openQuote, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, registerResultSetOutParameter, remapSqlTypeDescriptor, renderOrderByElement, replaceResultVariableInOrderByClauseWithPosition, requiresCastingOfParametersInSelectClause, requiresParensForTupleDistinctCounts, supportsBindAsCallableArgument, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsCommentOn, supportsIfExistsAfterConstraintName, supportsIfExistsAfterTableName, supportsIfExistsBeforeConstraintName, supportsIfExistsBeforeTableName, supportsLimit, supportsLimitOffset, supportsLobValueChangePropogation, supportsNamedParameters, supportsNationalizedTypes, supportsNotNullUnique, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsPooledSequences, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSequences, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTupleCounts, supportsUnboundedLobLocatorMaterialization, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsVariableLimit, toBooleanValueString, toString, transformSelectString, useFollowOnLocking, useInputStreamToInsertBlob, useMaxForLimit

Methods inherited from class java.lang.Object

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

Constructor Detail

SybaseASE15Dialect

public SybaseASE15Dialect()

Constructs a SybaseASE15Dialect

Method Detail

supportsCascadeDelete

public boolean supportsCascadeDelete()

Description copied from class: Dialect

Does this dialect support cascaded delete on foreign key definitions?

Overrides:

supportsCascadeDelete in class Dialect

Returns:

true indicates that the dialect does support cascaded delete on foreign keys.

getMaxAliasLength

public int getMaxAliasLength()

Description copied from class: Dialect

What is the maximum length Hibernate can use for generated aliases?

The maximum here should account for the fact that Hibernate often needs to append "uniqueing" information to the end of generated aliases. That "uniqueing" information will be added to the end of a identifier generated to the length specified here; so be sure to leave some room (generally speaking 5 positions will suffice).

Overrides:

getMaxAliasLength in class Dialect

Returns:

The maximum length.

areStringComparisonsCaseInsensitive

public boolean areStringComparisonsCaseInsensitive()

By default, Sybase string comparisons are case-insensitive.

If the DB is configured to be case-sensitive, then this return value will be incorrect.

Are string comparisons implicitly case insensitive.

In other words, does [where 'XYZ' = 'xyz'] resolve to true?

Overrides:

areStringComparisonsCaseInsensitive in class Dialect

Returns:

True if comparisons are case insensitive.

getCurrentTimestampSQLFunctionName

public java.lang.String getCurrentTimestampSQLFunctionName()

Description copied from class: Dialect

The name of the database-specific SQL function for retrieving the current timestamp.

Overrides:

getCurrentTimestampSQLFunctionName in class Dialect

Returns:

The function name.

supportsExpectedLobUsagePattern

public boolean supportsExpectedLobUsagePattern()

Actually Sybase does not support LOB locators at al.

Overrides:

supportsExpectedLobUsagePattern in class Dialect

Returns:

false.

True if normal LOB usage patterns can be used with this driver; false if driver-specific hookiness needs to be applied.

getCrossJoinSeparator

public java.lang.String getCrossJoinSeparator()

Description copied from class: Dialect

Returns the separator to use for defining cross joins when translating HQL queries.

Typically this will be either [ cross join ] or [, ]

Note that the spaces are important!

Overrides:

getCrossJoinSeparator in class Dialect

Returns:

The cross join separator

getSqlTypeDescriptorOverride

protected SqlTypeDescriptor getSqlTypeDescriptorOverride(int sqlCode)

Description copied from class: Dialect

Returns the SqlTypeDescriptor that should be used to handle the given JDBC type code. Returns null if there is no override.

Overrides:

getSqlTypeDescriptorOverride in class SybaseDialect

Parameters:

sqlCode - A Types constant indicating the SQL column type

Returns:

The SqlTypeDescriptor to use as an override, or null if there is no override.

supportsLockTimeouts

public boolean supportsLockTimeouts()

Description copied from class: Dialect

Informational metadata about whether this dialect is known to support specifying timeouts for requested lock acquisitions.

Overrides:

supportsLockTimeouts in class Dialect

Returns:

True is this dialect supports specifying lock timeouts.

getAddColumnString

public java.lang.String getAddColumnString()

Description copied from class: Dialect

The syntax used to add a column to a table (optional).

Overrides:

getAddColumnString in class Dialect

Returns:

The "add column" fragment.

qualifyIndexName

public boolean qualifyIndexName()

Description copied from class: Dialect

Do we need to qualify index names with the schema name?

Overrides:

qualifyIndexName in class Dialect

Returns:

boolean

getForUpdateString

public java.lang.String getForUpdateString()

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire locks for this dialect.

Overrides:

getForUpdateString in class Dialect

Returns:

The appropriate FOR UPDATE clause string.

appendLockHint

public java.lang.String appendLockHint(LockOptions lockOptions,
                                       java.lang.String tableName)

Description copied from class: Dialect

Some dialects support an alternative means to SELECT FOR UPDATE, whereby a "lock hint" is appends to the table name in the from clause.

contributed by Helge Schulz

Overrides:

appendLockHint in class Dialect

Parameters:

lockOptions - The lock options to apply

tableName - The name of the table to which to apply the lock hint.

Returns:

The table with any required lock hints.

applyLocksToSql

public java.lang.String applyLocksToSql(java.lang.String sql,
                                        LockOptions aliasedLockOptions,
                                        java.util.Map<java.lang.String,java.lang.String[]> keyColumnNames)

Description copied from class: Dialect

Modifies the given SQL by applying the appropriate updates for the specified lock modes and key columns.

The behavior here is that of an ANSI SQL SELECT FOR UPDATE. This method is really intended to allow dialects which do not support SELECT FOR UPDATE to achieve this in their own fashion.

Overrides:

applyLocksToSql in class Dialect

Parameters:

sql - the SQL string to modify

aliasedLockOptions - lock options indexed by aliased table names.

keyColumnNames - a map of key columns indexed by aliased table names.

Returns:

the modified SQL string.

registerResultSetOutParameter

public int registerResultSetOutParameter(java.sql.CallableStatement statement,
                                         int col)
                                  throws java.sql.SQLException

Description copied from class: Dialect

Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning ResultSet *by position*. Pre-Java 8, registering such ResultSet-returning parameters varied greatly across database and drivers; hence its inclusion as part of the Dialect contract.

Overrides:

registerResultSetOutParameter in class Dialect

Parameters:

statement - The callable statement.

col - The bind position at which to register the output param.

Returns:

The number of (contiguous) bind positions used.

Throws:

java.sql.SQLException - Indicates problems registering the param.

getResultSet

public java.sql.ResultSet getResultSet(java.sql.CallableStatement ps)
                                throws java.sql.SQLException

Description copied from class: Dialect

Given a callable statement previously processed by Dialect.registerResultSetOutParameter(java.sql.CallableStatement, int), extract the ResultSet from the OUT parameter.

Overrides:

getResultSet in class Dialect

Parameters:

ps - The callable statement.

Returns:

The extracted result set.

Throws:

java.sql.SQLException - Indicates problems extracting the result set.

supportsCurrentTimestampSelection

public boolean supportsCurrentTimestampSelection()

Description copied from class: Dialect

Does this dialect support a way to retrieve the database's current timestamp value?

Overrides:

supportsCurrentTimestampSelection in class Dialect

Returns:

True if the current timestamp can be retrieved; false otherwise.

isCurrentTimestampSelectStringCallable

public boolean isCurrentTimestampSelectStringCallable()

Description copied from class: Dialect

Should the value returned by Dialect.getCurrentTimestampSelectString() be treated as callable. Typically this indicates that JDBC escape syntax is being used...

Overrides:

isCurrentTimestampSelectStringCallable in class Dialect

Returns:

True if the Dialect.getCurrentTimestampSelectString() return is callable; false otherwise.

getCurrentTimestampSelectString

public java.lang.String getCurrentTimestampSelectString()

Description copied from class: Dialect

Retrieve the command used to retrieve the current timestamp from the database.

Overrides:

getCurrentTimestampSelectString in class Dialect

Returns:

The command.

getDefaultMultiTableBulkIdStrategy

public MultiTableBulkIdStrategy getDefaultMultiTableBulkIdStrategy()

Overrides:

getDefaultMultiTableBulkIdStrategy in class Dialect

getSelectGUIDString

public java.lang.String getSelectGUIDString()

Description copied from class: Dialect

Get the command used to select a GUID from the underlying database.

Optional operation.

Overrides:

getSelectGUIDString in class Dialect

Returns:

The appropriate command.

supportsEmptyInList

public boolean supportsEmptyInList()

Description copied from class: Dialect

Does this dialect support empty IN lists?

For example, is [where XYZ in ()] a supported construct?

Overrides:

supportsEmptyInList in class Dialect

Returns:

True if empty in lists are supported; false otherwise.

supportsUnionAll

public boolean supportsUnionAll()

Description copied from class: Dialect

Does this dialect support UNION ALL, which is generally a faster variant of UNION?

Overrides:

supportsUnionAll in class Dialect

Returns:

True if UNION ALL is supported; false otherwise.

supportsExistsInSelect

public boolean supportsExistsInSelect()

Description copied from class: Dialect

Does the dialect support an exists statement in the select clause?

Overrides:

supportsExistsInSelect in class Dialect

Returns:

True if exists checks are allowed in the select clause; false otherwise.

doesReadCommittedCauseWritersToBlockReaders

public boolean doesReadCommittedCauseWritersToBlockReaders()

Description copied from class: Dialect

For the underlying database, is READ_COMMITTED isolation implemented by forcing readers to wait for write locks to be released?

Overrides:

doesReadCommittedCauseWritersToBlockReaders in class Dialect

Returns:

True if writers block readers to achieve READ_COMMITTED; false otherwise.

doesRepeatableReadCauseReadersToBlockWriters

public boolean doesRepeatableReadCauseReadersToBlockWriters()

Description copied from class: Dialect

For the underlying database, is REPEATABLE_READ isolation implemented by forcing writers to wait for read locks to be released?

Overrides:

doesRepeatableReadCauseReadersToBlockWriters in class Dialect

Returns:

True if readers block writers to achieve REPEATABLE_READ; false otherwise.

supportsTupleDistinctCounts

public boolean supportsTupleDistinctCounts()

Description copied from class: Dialect

Does this dialect support `count(distinct a,b)`?

Overrides:

supportsTupleDistinctCounts in class Dialect

Returns:

True if the database supports counting distinct tuples; false otherwise.

supportsTuplesInSubqueries

public boolean supportsTuplesInSubqueries()

Description copied from class: Dialect

Does this dialect support tuples in subqueries? Ex: delete from Table1 where (col1, col2) in (select col1, col2 from Table2)

Overrides:

supportsTuplesInSubqueries in class Dialect

Returns:

boolean

getIdentityColumnSupport

public IdentityColumnSupport getIdentityColumnSupport()

Description copied from class: Dialect

Get the appropriate IdentityColumnSupport

Overrides:

getIdentityColumnSupport in class Dialect

Returns:

the IdentityColumnSupport