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java.lang.Object org.hibernate.dialect.Dialect org.hibernate.dialect.SybaseASE15Dialect org.hibernate.dialect.SybaseASE157Dialect
public class SybaseASE157Dialect
An SQL dialect targeting Sybase Adaptive Server Enterprise (ASE) 15.7 and higher.
Field Summary |
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Fields inherited from class org.hibernate.dialect.Dialect |
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CLOSED_QUOTE, DEFAULT_BATCH_SIZE, NO_BATCH, QUOTE |
Constructor Summary | |
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SybaseASE157Dialect()
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Method Summary | |
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String |
appendIdentitySelectToInsert(String insertSQL)
Provided we Dialect.supportsInsertSelectIdentity() , then attach the
"select identity" clause to the insert statement. |
String |
appendLockHint(LockMode mode,
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 keyColumnNames)
Modifies the given SQL by applying the appropriate updates for the specified lock modes and key columns. |
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? |
boolean |
forUpdateOfColumns()
Is FOR UPDATE OF syntax supported? |
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 |
getCurrentTimestampSelectString()
Retrieve the command used to retrieve the current timestamp from the database. |
String |
getForUpdateString()
Get the string to append to SELECT statements to acquire locks for this dialect. |
String |
getForUpdateString(String aliases)
Get the FOR UPDATE OF column_list fragment appropriate for this dialect given the aliases of the columns to be write locked. |
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. |
String |
getNullColumnString()
The keyword used to specify a nullable column. |
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. |
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 |
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 |
supportsLobValueChangePropogation()
Does the dialect support propagating changes to LOB values back to the database? Talking about mutating the internal value of the locator as opposed to supplying a new locator instance... |
boolean |
supportsTemporaryTables()
Does this dialect support temporary tables? |
boolean |
supportsTupleDistinctCounts()
Does this dialect support `count(distinct a,b)`? |
boolean |
supportsUnionAll()
Does this dialect support UNION ALL, which is generally a faster variant of UNION? |
Methods inherited from class org.hibernate.dialect.SybaseASE15Dialect |
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areStringComparisonsCaseInsensitive, getCrossJoinSeparator, getCurrentTimestampSQLFunctionName, getMaxAliasLength, supportsCascadeDelete, supportsUniqueConstraintInCreateAlterTable |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public SybaseASE157Dialect()
Method Detail |
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public boolean supportsExpectedLobUsagePattern()
SybaseASE15Dialect
supportsExpectedLobUsagePattern
in class SybaseASE15Dialect
public boolean supportsLobValueChangePropogation()
Dialect
Blob.setBinaryStream(long)
,
Blob.setBytes(long, byte[])
,
Blob.setBytes(long, byte[], int, int)
,
or Blob.truncate(long)
.
For CLOBs, the internal value might be changed by:
Clob.setAsciiStream(long)
,
Clob.setCharacterStream(long)
,
Clob.setString(long, String)
,
Clob.setString(long, String, int, int)
,
or Clob.truncate(long)
.
NOTE : I do not know the correct answer currently for
databases which (1) are not part of the cruise control process
or (2) do not Dialect.supportsExpectedLobUsagePattern()
.
supportsLobValueChangePropogation
in class Dialect
public boolean forUpdateOfColumns()
Dialect
forUpdateOfColumns
in class Dialect
public String getForUpdateString()
Dialect
public String getForUpdateString(String aliases)
Dialect
getForUpdateString
in class Dialect
aliases
- The columns to be write locked.
public String appendLockHint(LockMode mode, String tableName)
Dialect
mode
- The lock mode to applytableName
- The name of the table to which to apply the lock hint.
public String applyLocksToSql(String sql, LockOptions aliasedLockOptions, Map keyColumnNames)
Dialect
sql
- the SQL string to modifyaliasedLockOptions
- lock options indexed by aliased table names.keyColumnNames
- a map of key columns indexed by aliased table names.
public String getAddColumnString()
Dialect
getAddColumnString
in class Dialect
public String getNullColumnString()
Dialect
getNullColumnString
in class Dialect
public boolean qualifyIndexName()
Dialect
qualifyIndexName
in class Dialect
public boolean supportsIdentityColumns()
Dialect
supportsIdentityColumns
in class Dialect
public String getIdentitySelectString()
Dialect
getIdentitySelectString
in class Dialect
public String getIdentityColumnString()
Dialect
getIdentityColumnString
in class Dialect
public boolean supportsInsertSelectIdentity()
Dialect
supportsInsertSelectIdentity
in class Dialect
public String appendIdentitySelectToInsert(String insertSQL)
Dialect
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.
appendIdentitySelectToInsert
in class Dialect
insertSQL
- The insert command
public int registerResultSetOutParameter(CallableStatement statement, int col) throws SQLException
Dialect
ResultSet
. How this is accomplished varies greatly
from DB to DB, hence its inclusion (along with Dialect.getResultSet(java.sql.CallableStatement)
) here.
registerResultSetOutParameter
in class Dialect
statement
- The callable statement.col
- The bind position at which to register the OUT param.
SQLException
- Indicates problems registering the OUT param.public ResultSet getResultSet(CallableStatement ps) throws SQLException
Dialect
Dialect.registerResultSetOutParameter(java.sql.CallableStatement, int)
,
extract the ResultSet
from the OUT parameter.
getResultSet
in class Dialect
ps
- The callable statement.
SQLException
- Indicates problems extracting the result set.public boolean supportsCurrentTimestampSelection()
Dialect
supportsCurrentTimestampSelection
in class Dialect
public boolean isCurrentTimestampSelectStringCallable()
Dialect
Dialect.getCurrentTimestampSelectString()
be treated as callable. Typically this indicates that JDBC escape
syntax is being used...
isCurrentTimestampSelectStringCallable
in class Dialect
Dialect.getCurrentTimestampSelectString()
return
is callable; false otherwise.public String getCurrentTimestampSelectString()
Dialect
getCurrentTimestampSelectString
in class Dialect
public boolean supportsTemporaryTables()
Dialect
supportsTemporaryTables
in class Dialect
public String generateTemporaryTableName(String baseTableName)
Dialect
generateTemporaryTableName
in class Dialect
baseTableName
- The table name from which to base the temp table name.
public boolean dropTemporaryTableAfterUse()
Dialect
dropTemporaryTableAfterUse
in class Dialect
public String getSelectGUIDString()
Dialect
getSelectGUIDString
in class Dialect
public boolean supportsEmptyInList()
Dialect
supportsEmptyInList
in class Dialect
public boolean supportsUnionAll()
Dialect
supportsUnionAll
in class Dialect
public boolean supportsExistsInSelect()
Dialect
supportsExistsInSelect
in class Dialect
public boolean doesReadCommittedCauseWritersToBlockReaders()
Dialect
doesReadCommittedCauseWritersToBlockReaders
in class Dialect
public boolean doesRepeatableReadCauseReadersToBlockWriters()
Dialect
doesRepeatableReadCauseReadersToBlockWriters
in class Dialect
public boolean supportsTupleDistinctCounts()
Dialect
supportsTupleDistinctCounts
in class Dialect
|
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