org.datanucleus.store.rdbms.sql.expression
Class BooleanSubqueryExpression

java.lang.Object
  org.datanucleus.store.rdbms.sql.expression.SQLExpression
      org.datanucleus.store.rdbms.sql.expression.BooleanExpression
          org.datanucleus.store.rdbms.sql.expression.BooleanSubqueryExpression

public class BooleanSubqueryExpression
extends BooleanExpression

Boolean expression to wrap a subquery. The subquery will be a "SELECT 1 FROM ..." resulting in SQL like

{keyword} (SELECT 1 FROM ...)

where the keyword is supplied (e.g EXISTS). e.g

EXISTS (SELECT 1 FROM TBL WHERE TBL.ID = A0.ID)









Nested Class Summary

 
Nested classes/interfaces inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression
SQLExpression.ColumnExpressionList
 



Field Summary

 
Fields inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression
isParameter, LOCALISER, lowestOperator, mapping, st, stmt, subExprs, table
 



Constructor Summary
BooleanSubqueryExpression(SQLStatement stmt,
                          java.lang.String keyword,
                          SQLStatement subStmt)



           
 



Method Summary

 
Methods inherited from class org.datanucleus.store.rdbms.sql.expression.BooleanExpression
and, eor, eq, in, invoke, ior, ne, neg, not
 
Methods inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression
add, cast, checkForAndCorrectParameterComparison, com, div, encloseInParentheses, ge, getJavaTypeMapping, getNumberOfSubExpressions, getSQLStatement, getSQLTable, gt, is, isParameter, le, lt, mod, mul, sub, toSQLText
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 





Constructor Detail



BooleanSubqueryExpression
public BooleanSubqueryExpression(SQLStatement stmt,
                                 java.lang.String keyword,
                                 SQLStatement subStmt)