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/*
 * Copyright 2009 Day Management AG, Switzerland. All rights reserved.
 */
package javax.jcr.query.qom;

/**
 * Tests whether the {@link #getChildSelectorName childSelector} node is a child
 * of the {@link #getParentSelectorName parentSelector} node.  A node-tuple
 * satisfies the constraint only if:
 *   childSelectorNode.getParent().isSame(parentSelectorNode)
 * would return true, where childSelectorNode is the node for
 * {@link #getChildSelectorName childSelector} and parentSelectorNode
 * is the node for {@link #getParentSelectorName parentSelector}.
 *
 * @since JCR 2.0
 */
public interface ChildNodeJoinCondition
        extends JoinCondition {
    /**
     * Gets the name of the child selector.
     *
     * @return the selector name; non-null
     */
    public String getChildSelectorName();

    /**
     * Gets the name of the parent selector.
     *
     * @return the selector name; non-null
     */
    public String getParentSelectorName();
}