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java.lang.Object org.hibernate.dialect.Dialect org.hibernate.dialect.SQLServerDialect org.hibernate.dialect.SQLServer2005Dialect
public class SQLServer2005Dialect
A dialect for Microsoft SQL 2005. (HHH-3936 fix)
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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SQLServer2005Dialect()
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Method Summary | |
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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 |
bindLimitParametersFirst()
Does the LIMIT clause come at the start of the SELECT statement, rather than at the end? |
int |
convertToFirstRowValue(int zeroBasedFirstResult)
Hibernate APIs explicitly state that setFirstResult() should be a zero-based offset. |
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 |
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. |
String |
getLimitString(String querySqlString,
boolean hasOffset)
Add a LIMIT clause to the given SQL SELECT (HHH-2655: ROW_NUMBER for Paging) The LIMIT SQL will look like: |
String |
getLimitString(String query,
int offset,
int limit)
Given a limit and an offset, apply the limit clause to the query. |
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. |
protected static CharSequence |
getSelectFieldsWithoutAliases(StringBuilder sql)
This utility method searches the given sql query for the fields of the select statement and returns them without the aliases. |
String |
getSelectGUIDString()
Get the command used to select a GUID from the underlying database. |
protected static void |
insertRowNumberFunction(StringBuilder sql,
CharSequence orderby)
Right after the select statement of a given query we must place the row_number function |
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 . |
protected static void |
replaceDistinctWithGroupBy(StringBuilder sql)
Utility method that checks if the given sql query is a select distinct one and if so replaces the distinct select with an equivalent simple select with a group by clause. |
protected static String |
stripAliases(String str)
Utility method that strips the aliases. |
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 |
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 |
supportsLimitOffset()
Does this dialect's LIMIT support (if any) additionally support specifying an offset? |
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? |
boolean |
supportsVariableLimit()
Does this dialect support bind variables (i.e., prepared statement parameters) for its limit/offset? |
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 SQLServer2005Dialect()
Method Detail |
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public boolean supportsLimitOffset()
Dialect
supportsLimitOffset
in class SQLServerDialect
public boolean bindLimitParametersFirst()
Dialect
bindLimitParametersFirst
in class Dialect
public boolean supportsVariableLimit()
Dialect
supportsVariableLimit
in class SQLServerDialect
public int convertToFirstRowValue(int zeroBasedFirstResult)
Dialect
Dialect.getLimitString(String,int,int)
is the zero-based offset. Dialects which
do not Dialect.supportsVariableLimit()
should take care to perform any needed Dialect.convertToFirstRowValue(int)
calls prior to injecting the limit values into the SQL string.
convertToFirstRowValue
in class Dialect
zeroBasedFirstResult
- The user-supplied, zero-based first row offset.
Query.setFirstResult(int)
,
Criteria.setFirstResult(int)
public String getLimitString(String query, int offset, int limit)
Dialect
getLimitString
in class SQLServerDialect
query
- The query to which to apply the limit.offset
- The offset of the limitlimit
- The limit of the limit ;)
public String getLimitString(String querySqlString, boolean hasOffset)
WITH query AS ( SELECT ROW_NUMBER() OVER (ORDER BY orderby) as __hibernate_row_nr__, original_query_without_orderby ) SELECT * FROM query WHERE __hibernate_row_nr__ BEETWIN offset AND offset + last
getLimitString
in class Dialect
querySqlString
- The SQL statement to base the limit query off of.offset
- Offset of the first row to be returned by the query (zero-based)limit
- Maximum number of rows to be returned by the query
protected static void replaceDistinctWithGroupBy(StringBuilder sql)
SQLServer2005DialectTestCase#testReplaceDistinctWithGroupBy()
sql
- an sql queryprotected static CharSequence getSelectFieldsWithoutAliases(StringBuilder sql)
SQLServer2005DialectTestCase#testGetSelectFieldsWithoutAliases()
an
- sql query
protected static String stripAliases(String str)
SQLServer2005DialectTestCase#testStripAliases()
a
- string to replace the as statements
protected static void insertRowNumberFunction(StringBuilder sql, CharSequence orderby)
sql
- the initial sql query without the order by clauseorderby
- the order by clause of the querypublic String getAddColumnString()
Dialect
getAddColumnString
in class Dialect
public String getNullColumnString()
Dialect
getNullColumnString
in class Dialect
public boolean qualifyIndexName()
Dialect
qualifyIndexName
in class Dialect
public String getForUpdateString()
Dialect
getForUpdateString
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 applyLocksToSql(String sql, LockOptions aliasedLockOptions, Map keyColumnNames)
Dialect
applyLocksToSql
in class 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 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 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 supportsTupleDistinctCounts()
Dialect
supportsTupleDistinctCounts
in class Dialect
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