Examples with ObjectExpression org.eclipse.persistence.internal.expressions.ObjectExpression used on opensource projects

Example 21 with ObjectExpression

use of org.eclipse.persistence.internal.expressions.ObjectExpression in project eclipselink by eclipse-ee4j.

the class FromImpl method join.

@Override
public <Y> Join<X, Y> join(SingularAttribute<? super X, Y> attribute, JoinType jt) {
    if (((SingularAttribute) attribute).getType().getPersistenceType().equals(PersistenceType.BASIC)) {
        throw new IllegalStateException(ExceptionLocalization.buildMessage("CAN_NOT_JOIN_TO_BASIC"));
    }
    Class<Y> clazz = attribute.getBindableJavaType();
    Join<X, Y> join = null;
    ObjectExpression exp = ((ObjectExpression) this.currentNode).newDerivedExpressionNamed(attribute.getName());
    if (jt.equals(JoinType.LEFT)) {
        exp.doUseOuterJoin();
    } else if (jt.equals(JoinType.RIGHT)) {
        throw new UnsupportedOperationException(ExceptionLocalization.buildMessage("RIGHT_JOIN_NOT_SUPPORTED"));
    } else {
        exp.doNotUseOuterJoin();
    }
    join = new JoinImpl<X, Y>(this, this.metamodel.managedType(clazz), this.metamodel, clazz, exp, attribute, jt);
    this.joins.add(join);
    ((FromImpl) join).isJoin = true;
    return join;
}