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java.lang.Object org.hibernate.dialect.Dialect org.hibernate.dialect.RDMSOS2200Dialect
public class RDMSOS2200Dialect
This is the Hibernate dialect for the Unisys 2200 Relational Database (RDMS). This dialect was developed for use with Hibernate 3.0.5. Other versions may require modifications to the dialect. Version History: Also change the version displayed below in the constructor 1.1 1.0 2005-10-24 CDH - First dated version for use with CP 11
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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RDMSOS2200Dialect()
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Method Summary | |
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CaseFragment |
createCaseFragment()
Create a CaseFragment strategy responsible
for handling this dialect's variations in how CASE statements are
handled. |
boolean |
forUpdateOfColumns()
The RDMS DB supports the 'FOR UPDATE OF' clause. |
String |
getAddColumnString()
The syntax used to add a column to a table (optional). |
String |
getCascadeConstraintsString()
Completely optional cascading drop clause |
String |
getCreateSequenceString(String sequenceName)
Typically dialects which support sequences can create a sequence with a single command. |
String |
getDropSequenceString(String sequenceName)
Typically dialects which support sequences can drop a sequence with a single command. |
String |
getForUpdateString()
Since the RDMS-JDBC driver does not support for updates, this string is set to an empty string. |
String |
getLimitString(String sql,
int offset,
int limit)
Given a limit and an offset, apply the limit clause to the query. |
LockingStrategy |
getLockingStrategy(Lockable lockable,
LockMode lockMode)
Get a strategy instance which knows how to acquire a database-level lock of the specified mode for this dialect. |
String |
getNullColumnString()
The keyword used to specify a nullable column. |
String |
getSequenceNextValString(String sequenceName)
Generate the appropriate select statement to to retrieve the next value of a sequence. |
boolean |
qualifyIndexName()
RDMS does not support qualifing index names with the schema name. |
boolean |
supportsCascadeDelete()
RDMS does not support Cascade Deletes. |
boolean |
supportsLimit()
Does this dialect support some form of limiting query results via a SQL clause? |
boolean |
supportsLimitOffset()
Does this dialect's LIMIT support (if any) additionally support specifying an offset? |
boolean |
supportsOuterJoinForUpdate()
Currently, RDMS-JDBC does not support ForUpdate. |
boolean |
supportsSequences()
Does this dialect support sequences? |
boolean |
supportsUnionAll()
Does this dialect support UNION ALL, which is generally a faster variant of UNION? |
boolean |
supportsUniqueConstraintInCreateAlterTable()
RDMS does not support adding Unique constraints via create and alter table. |
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 RDMSOS2200Dialect()
Method Detail |
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public boolean qualifyIndexName()
qualifyIndexName
in class Dialect
public boolean forUpdateOfColumns()
forUpdateOfColumns
in class Dialect
public String getForUpdateString()
getForUpdateString
in class Dialect
public boolean supportsUniqueConstraintInCreateAlterTable()
supportsUniqueConstraintInCreateAlterTable
in class Dialect
public boolean supportsCascadeDelete()
supportsCascadeDelete
in class Dialect
public boolean supportsOuterJoinForUpdate()
supportsOuterJoinForUpdate
in class Dialect
public String getAddColumnString()
Dialect
getAddColumnString
in class Dialect
public String getNullColumnString()
Dialect
getNullColumnString
in class Dialect
public boolean supportsSequences()
Dialect
supportsSequences
in class Dialect
public String getSequenceNextValString(String sequenceName)
Dialect
getSequenceNextValString
in class Dialect
sequenceName
- the name of the sequence
public String getCreateSequenceString(String sequenceName)
Dialect
Dialect.getCreateSequenceStrings(java.lang.String)
to help facilitate that.
Dialects which support sequences and can create a sequence in a
single command need *only* override this method. Dialects
which support sequences but require multiple commands to create
a sequence should instead override Dialect.getCreateSequenceStrings(java.lang.String)
.
getCreateSequenceString
in class Dialect
sequenceName
- The name of the sequence
public String getDropSequenceString(String sequenceName)
Dialect
Dialect.getDropSequenceStrings(java.lang.String)
to help facilitate that.
Dialects which support sequences and can drop a sequence in a
single command need *only* override this method. Dialects
which support sequences but require multiple commands to drop
a sequence should instead override Dialect.getDropSequenceStrings(java.lang.String)
.
getDropSequenceString
in class Dialect
sequenceName
- The name of the sequence
public String getCascadeConstraintsString()
Dialect
getCascadeConstraintsString
in class Dialect
public CaseFragment createCaseFragment()
Dialect
CaseFragment
strategy responsible
for handling this dialect's variations in how CASE statements are
handled.
createCaseFragment
in class Dialect
CaseFragment
strategy.public boolean supportsLimit()
Dialect
supportsLimit
in class Dialect
public boolean supportsLimitOffset()
Dialect
supportsLimitOffset
in class Dialect
public String getLimitString(String sql, int offset, int limit)
Dialect
getLimitString
in class Dialect
sql
- The query to which to apply the limit.offset
- The offset of the limitlimit
- The limit of the limit ;)
public boolean supportsVariableLimit()
Dialect
supportsVariableLimit
in class Dialect
public boolean supportsUnionAll()
Dialect
supportsUnionAll
in class Dialect
public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode)
Dialect
getLockingStrategy
in class Dialect
lockable
- The persister for the entity to be locked.lockMode
- The type of lock to be acquired.
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