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java.lang.Objectorg.apache.openjpa.jdbc.sql.DBDictionary
org.apache.openjpa.jdbc.sql.EmpressDictionary
public class EmpressDictionary
Dictionary for Empress using ODBC server combined with their type 2 driver. This dictionary may issues with other driver/topology configurations. Empress does not allow multiple connections to read rows read in a transaction, effectively forcing pessimistic transactions regardless of the Optimistic setting. To allow users to use optimistic transactions in a multi-connection evironment, you must set the AllowConcurrentRead setting to true in addition to standard options. Empress has the following additional limitations:
Nested Class Summary |
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Nested classes/interfaces inherited from class org.apache.openjpa.jdbc.sql.DBDictionary |
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DBDictionary.SerializedData |
Field Summary | |
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boolean |
allowConcurrentRead
This setting inserts "BYPASS" after every "SELECT". |
Fields inherited from interface org.apache.openjpa.jdbc.sql.JoinSyntaxes |
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SYNTAX_DATABASE, SYNTAX_SQL92, SYNTAX_TRADITIONAL |
Constructor Summary | |
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EmpressDictionary()
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Method Summary | |
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String[] |
getDropColumnSQL(Column column)
Return a series of SQL statements to drop the given column from its table. |
boolean |
isSystemIndex(String name,
Table table)
This method is used to filter system indexes from database metadata. |
void |
setDouble(PreparedStatement stmnt,
int idx,
double val,
Column col)
Set the given value as a parameter to the statement. |
void |
setFloat(PreparedStatement stmnt,
int idx,
float val,
Column col)
Set the given value as a parameter to the statement. |
SQLBuffer |
toSelect(SQLBuffer selects,
JDBCFetchConfiguration fetch,
SQLBuffer from,
SQLBuffer where,
SQLBuffer group,
SQLBuffer having,
SQLBuffer order,
boolean distinct,
boolean forUpdate,
long startIdx,
long endIdx)
Combine the given components into a SELECT statement. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public boolean allowConcurrentRead
Constructor Detail |
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public EmpressDictionary()
Method Detail |
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public boolean isSystemIndex(String name, Table table)
DBDictionary
isSystemIndex
in class DBDictionary
name
- the index nametable
- the index tablepublic SQLBuffer toSelect(SQLBuffer selects, JDBCFetchConfiguration fetch, SQLBuffer from, SQLBuffer where, SQLBuffer group, SQLBuffer having, SQLBuffer order, boolean distinct, boolean forUpdate, long startIdx, long endIdx)
DBDictionary
toSelect
in class DBDictionary
public String[] getDropColumnSQL(Column column)
DBDictionary
ALTER TABLE <table name> DROP COLUMN <col name>
by default.
getDropColumnSQL
in class DBDictionary
public void setFloat(PreparedStatement stmnt, int idx, float val, Column col) throws SQLException
DBDictionary
setFloat
in class DBDictionary
SQLException
public void setDouble(PreparedStatement stmnt, int idx, double val, Column col) throws SQLException
DBDictionary
setDouble
in class DBDictionary
SQLException
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This documentation is deprecated and will be removed in the next release of WebLogic Server.