org.hibernate.dialect
Class SybaseASE15Dialect

java.lang.Object
  extended by org.hibernate.dialect.Dialect
      extended by org.hibernate.dialect.SybaseDialect
          extended by 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, STREAM_XFER_LOB_MERGE_STRATEGY
 
Constructor Summary
SybaseASE15Dialect()
           
 
Method Summary
 String appendIdentitySelectToInsert(String insertSQL)
          Provided we Dialect.supportsInsertSelectIdentity(), then attach the "select identity" clause to the insert statement.
 String appendLockHint(LockOptions lockOptions, 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.
 String applyLocksToSql(String sql, LockOptions aliasedLockOptions, Map<String,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?
 boolean dropTemporaryTableAfterUse()
          Do we need to drop the temporary table after use?
 String generateTemporaryTableName(String baseTableName)
          Generate a temporary table name given the base table.
 String getAddColumnString()
          The syntax used to add a column to a table (optional).
 String getCrossJoinSeparator()
           
 String getCurrentTimestampSelectString()
          Retrieve the command used to retrieve the current timestamp from the database.
 String getCurrentTimestampSQLFunctionName()
          The name of the database-specific SQL function for retrieving the current timestamp.
 String getForUpdateString()
          Get the string to append to SELECT statements to acquire locks for this dialect.
 String getIdentityColumnString()
          The syntax used during DDL to define a column as being an IDENTITY.
 String getIdentitySelectString()
          Get the select command to use to retrieve the last generated IDENTITY value.
 int getMaxAliasLength()
          What is the maximum length Hibernate can use for generated aliases?
 ResultSet getResultSet(CallableStatement ps)
          Given a callable statement previously processed by Dialect.registerResultSetOutParameter(java.sql.CallableStatement, int), extract the ResultSet from the OUT parameter.
 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(CallableStatement statement, int col)
          Registers an OUT parameter which will be returning a ResultSet.
 boolean supportsCascadeDelete()
           
 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 supportsIdentityColumns()
          Does this dialect support identity column key generation?
 boolean supportsInsertSelectIdentity()
          Does the dialect support some form of inserting and selecting the generated IDENTITY value all in the same statement.
 boolean supportsLockTimeouts()
          Informational metadata about whether this dialect is known to support specifying timeouts for requested lock acquisitions.
 boolean supportsTemporaryTables()
          Does this dialect support temporary tables?
 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, buildLimitHandler, buildSQLExceptionConversionDelegate, buildSQLExceptionConverter, cast, cast, cast, closeQuote, contributeTypes, convertToFirstRowValue, createCaseFragment, createOuterJoinFragment, dropConstraints, forceLimitUsage, forceLobAsLastValue, forUpdateOfColumns, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAddUniqueConstraintString, getCascadeConstraintsString, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateMultisetTableString, getCreateSequenceString, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCreateTemporaryTablePostfix, getCreateTemporaryTableString, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSequenceString, getDropSequenceStrings, getDropTableString, getDropTemporaryTableString, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIdentityColumnString, getIdentityInsertString, getIdentitySelectString, getKeywords, getLimitString, getLimitString, getLobMergeStrategy, getLockingStrategy, getLowercaseFunction, getNativeIdentifierGeneratorClass, getNoColumnsInsertString, getNotExpression, getQuerySequencesString, getReadLockString, getSelectClauseNullString, getSelectSequenceNextValString, getSequenceNextValString, getTableComment, getTableTypeString, getTypeName, getTypeName, getUniqueDelegate, getViolatedConstraintNameExtracter, getWriteLockString, hasAlterTable, hasDataTypeInIdentityColumn, hasSelfReferentialForeignKeyBug, isLockTimeoutParameterized, openQuote, performTemporaryTableDDLInIsolation, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, remapSqlTypeDescriptor, renderOrderByElement, replaceResultVariableInOrderByClauseWithPosition, requiresCastingOfParametersInSelectClause, requiresParensForTupleDistinctCounts, supportsBindAsCallableArgument, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsCommentOn, supportsIfExistsAfterTableName, supportsIfExistsBeforeTableName, supportsLimit, supportsLimitOffset, supportsLobValueChangePropogation, 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()
Method Detail

supportsCascadeDelete

public boolean supportsCascadeDelete()
Overrides:
supportsCascadeDelete in class Dialect

getMaxAliasLength

public int getMaxAliasLength()
Description copied from class: Dialect
What is the maximum length Hibernate can use for generated aliases?

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.

Overrides:
areStringComparisonsCaseInsensitive in class Dialect
Returns:
True if comparisons are case insensitive.

getCurrentTimestampSQLFunctionName

public 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.

getCrossJoinSeparator

public String getCrossJoinSeparator()
Overrides:
getCrossJoinSeparator in class Dialect
Returns:
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!


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 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 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.

supportsIdentityColumns

public boolean supportsIdentityColumns()
Description copied from class: Dialect
Does this dialect support identity column key generation?

Overrides:
supportsIdentityColumns in class Dialect
Returns:
True if IDENTITY columns are supported; false otherwise.

getIdentitySelectString

public String getIdentitySelectString()
Description copied from class: Dialect
Get the select command to use to retrieve the last generated IDENTITY value.

Overrides:
getIdentitySelectString in class Dialect
Returns:
The appropriate select command

getIdentityColumnString

public String getIdentityColumnString()
Description copied from class: Dialect
The syntax used during DDL to define a column as being an IDENTITY.

Overrides:
getIdentityColumnString in class Dialect
Returns:
The appropriate DDL fragment.

supportsInsertSelectIdentity

public boolean supportsInsertSelectIdentity()
Description copied from class: Dialect
Does the dialect support some form of inserting and selecting the generated IDENTITY value all in the same statement.

Overrides:
supportsInsertSelectIdentity in class Dialect
Returns:
True if the dialect supports selecting the just generated IDENTITY in the insert statement.

appendIdentitySelectToInsert

public String appendIdentitySelectToInsert(String insertSQL)
Description copied from class: Dialect
Provided we Dialect.supportsInsertSelectIdentity(), then attach the "select identity" clause to the insert statement.

Note, if Dialect.supportsInsertSelectIdentity() == false then the insert-string should be returned without modification.

Overrides:
appendIdentitySelectToInsert in class Dialect
Parameters:
insertSQL - The insert command
Returns:
The insert command with any necessary identity select clause attached.

appendLockHint

public String appendLockHint(LockOptions lockOptions,
                             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 String applyLocksToSql(String sql,
                              LockOptions aliasedLockOptions,
                              Map<String,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(CallableStatement statement,
                                         int col)
                                  throws SQLException
Description copied from class: Dialect
Registers an OUT parameter which will be returning a ResultSet. How this is accomplished varies greatly from DB to DB, hence its inclusion (along with Dialect.getResultSet(java.sql.CallableStatement)) here.

Overrides:
registerResultSetOutParameter in class Dialect
Parameters:
statement - The callable statement.
col - The bind position at which to register the OUT param.
Returns:
The number of (contiguous) bind positions used.
Throws:
SQLException - Indicates problems registering the OUT param.

getResultSet

public ResultSet getResultSet(CallableStatement ps)
                       throws 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:
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 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.

supportsTemporaryTables

public boolean supportsTemporaryTables()
Description copied from class: Dialect
Does this dialect support temporary tables?

Overrides:
supportsTemporaryTables in class Dialect
Returns:
True if temp tables are supported; false otherwise.

generateTemporaryTableName

public String generateTemporaryTableName(String baseTableName)
Description copied from class: Dialect
Generate a temporary table name given the base table.

Overrides:
generateTemporaryTableName in class Dialect
Parameters:
baseTableName - The table name from which to base the temp table name.
Returns:
The generated temp table name.

dropTemporaryTableAfterUse

public boolean dropTemporaryTableAfterUse()
Description copied from class: Dialect
Do we need to drop the temporary table after use?

Overrides:
dropTemporaryTableAfterUse in class Dialect
Returns:
True if the table should be dropped.

getSelectGUIDString

public 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


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