org.jpox.store.expression
Class CollectionLiteral

java.lang.Object
  org.jpox.store.expression.ScalarExpression
      org.jpox.store.expression.CollectionLiteral

public class CollectionLiteral
extends ScalarExpression

An SQL expression that will test if a column of a table falls within the given Collection of values. This is used for Querys where a transient Collection is passed in as a parameter.

Version:

$Revision: 1.11 $

Nested Class Summary

Nested classes/interfaces inherited from class org.jpox.store.expression.ScalarExpression

ScalarExpression.DyadicOperator, ScalarExpression.ExpressionList, ScalarExpression.FieldExpression, ScalarExpression.IllegalArgumentTypeException, ScalarExpression.IllegalOperationException, ScalarExpression.MethodInvocationException, ScalarExpression.MonadicOperator, ScalarExpression.Operator

Field Summary

Fields inherited from class org.jpox.store.expression.ScalarExpression

aliasIdentifier, expressionList, FILTER, LOCALISER, lowestOperator, mapping, OP_ADD, OP_AND, OP_BETWEEN, OP_COM, OP_CONCAT, OP_DIV, OP_EQ, OP_GT, OP_GTEQ, OP_IN, OP_IS, OP_ISNOT, OP_LIKE, OP_LT, OP_LTEQ, OP_MOD, OP_MUL, OP_NEG, OP_NOT, OP_NOTEQ, OP_OR, OP_SUB, PROJECTION, qs, st, te

Constructor Summary

CollectionLiteral(QueryExpression qs, JavaTypeMapping mapping, java.util.Collection value)
Constructor.

Method Summary

BooleanExpression	containsMethod(ScalarExpression expr) Method to check the containing of an element.
BooleanExpression	isEmptyMethod() Method to check for emptiness of the collection.

Methods inherited from class org.jpox.store.expression.ScalarExpression

accessField, add, and, as, callMethod, cast, com, div, encloseWithInParentheses, eor, eq, equals, getAlias, getExpressionList, getLogicSetExpression, getMapping, getNonAliasExpression, getQueryExpression, gt, gteq, in, instanceOf, ior, lt, lteq, mod, mul, neg, not, noteq, sub, toStatementText, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionLiteral

public CollectionLiteral(QueryExpression qs,
                         JavaTypeMapping mapping,
                         java.util.Collection value)

Constructor.

Parameters:

qs - The QueryStatement the CollectionLiteral will be used in.

value - The transient Collection that is the value.

mapping - The mapping to the Collection

Method Detail

containsMethod

public BooleanExpression containsMethod(ScalarExpression expr)

Method to check the containing of an element. Return the BooleanExpression that results from CollectionLiteral.contains(SQLExpression).

Parameters:

expr - The SQLExpression that is checked for membership in the Collection

Returns:

The BooleanExpression that results from CollectionLiteral.contains(SQLExpression).

isEmptyMethod

public BooleanExpression isEmptyMethod()

Method to check for emptiness of the collection.

Returns:

The BooleanExpression.