org.datanucleus.store.rdbms.sql.method
Class SQLBooleanMethod

java.lang.Object
  org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod
      org.datanucleus.store.rdbms.sql.method.SQLBooleanMethod

All Implemented Interfaces:

SQLMethod

public class SQLBooleanMethod
extends AbstractSQLMethod

Method to allow inclusion of any SQL code that returns a boolean. The original expression will be of the form

SQL_boolean("some sql")

which is compiled into

InvokeExpression{STATIC.SQL_boolean(Literal{some sql})

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod

clr, exprFactory, LOCALISER, stmt

Constructor Summary

SQLBooleanMethod()

Method Summary

SQLExpression

getExpression(SQLExpression ignore, List args) Return the expression for this SQL function.

Methods inherited from class org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod

getMappingForClass, setStatement

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SQLBooleanMethod

public SQLBooleanMethod()

Method Detail

getExpression

public SQLExpression getExpression(SQLExpression ignore,
                                   List args)

Description copied from interface: SQLMethod

Return the expression for this SQL function.

Parameters:

ignore - The expression that it is invoked on

args - Arguments passed in

Returns:

The SQL expression using the SQL function