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#642 - ENH: Add support for OneToMany expression isEmpty() / isNotEmpty() ... which is effectively an EXISTS and NOT EXISTS subquery

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This commit is contained in:
Robin Bygrave
2016-04-08 13:41:43 +12:00
parent c58db0033d
commit 4059034891
20 changed files with 675 additions and 294 deletions
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src/main/java/com/avaje/ebeaninternal/server/expression/AbstractExpression.java
+10 -3
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@@ -28,12 +28,19 @@ public abstract class AbstractExpression implements SpiExpression {
@Override
public void containsMany(BeanDescriptor<?> desc, ManyWhereJoins manyWhereJoin) {
if (propName != null) {
ElPropertyDeploy elProp = desc.getElPropertyDeploy(propName);
propertyContainsMany(propName, desc, manyWhereJoin);
}
/**
* Check the logical property path for containing a 'many' property.
*/
protected void propertyContainsMany(String propertyName, BeanDescriptor<?> desc, ManyWhereJoins manyWhereJoin) {
if (propertyName != null) {
ElPropertyDeploy elProp = desc.getElPropertyDeploy(propertyName);
if (elProp != null) {
if (elProp.containsFormulaWithJoin()) {
// for findRowCount query select clause
manyWhereJoin.addFormulaWithJoin(propName);
manyWhereJoin.addFormulaWithJoin(propertyName);
}
if (elProp.containsMany()) {
// for findRowCount we join to a many property