org.apache.jackrabbit.spi.commons.query.jsr283.qom
Interface DescendantNodeJoinCondition

All Superinterfaces:

JoinCondition

All Known Implementing Classes:

DescendantNodeJoinConditionImpl

public interface DescendantNodeJoinCondition
extends JoinCondition

Tests whether the descendantSelector node is a descendant of the ancestorSelector node. A node-tuple satisfies the constraint only if:

  descendantSelectorNode.getAncestor(n).isSame(ancestorSelectorNode) &&
     descendantSelectorNode.getDepth() > n

would return true some some non-negative integer n, where descendantSelectorNode is the node for descendantSelector and ancestorSelectorNode is the node for ancestorSelector.

The query is invalid if:

• descendantSelector is not the name of a selector in the query, or
• ancestorSelector is not the name of a selector in the query, or
• descendantSelector is the same as ancestorSelector.

Since:

JCR 2.0

Method Summary

String	getAncestorSelectorName() Gets the name of the ancestor selector.
String	getDescendantSelectorName() Gets the name of the descendant selector.

Method Detail

getDescendantSelectorName

String getDescendantSelectorName()

Gets the name of the descendant selector.

Returns:

the selector name; non-null

getAncestorSelectorName

String getAncestorSelectorName()

Gets the name of the ancestor selector.

Returns:

the selector name; non-null