/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.hql.internal.ast.tree;
import org.hibernate.param.ParameterSpecification;

/**
 * Currently this is needed in order to deal with {@link FromElement FromElements} which
 * contain "hidden" JDBC parameters from applying filters.
 * <p/>
 * Would love for this to go away, but that would require that Hibernate's
 * internal {@link org.hibernate.engine.internal.JoinSequence join handling} be able to either:<ul>
 * <li>render the same AST structures</li>
 * <li>render structures capable of being converted to these AST structures</li>
 * </ul>
 * <p/>
 * In the interim, this allows us to at least treat these "hidden" parameters properly which is
 * the most pressing need.
 *
 * @deprecated See entire discussion above
 *
 * @author Steve Ebersole
 */
@Deprecated
public interface ParameterContainer {
	/**
	 * Set the renderable text of this node.
	 *
	 * @param text The renderable text
	 */
	public void setText(String text);

	/**
	 * Adds a parameter specification for a parameter encountered within this node.  We use the term 'embedded' here
	 * because of the fact that the parameter was simply encountered as part of the node's text; it does not exist
	 * as part of a subtree as it might in a true AST.
	 *
	 * @param specification The generated specification.
	 */
	public void addEmbeddedParameter(ParameterSpecification specification);

	/**
	 * Determine whether this node contains embedded parameters.  The implication is that
	 * {@link #getEmbeddedParameters()} is allowed to return null if this method returns false.
	 *
	 * @return True if this node contains embedded parameters; false otherwise.
	 */
	public boolean hasEmbeddedParameters();

	/**
	 * Retrieve all embedded parameter specifications.
	 *
	 * @return All embedded parameter specifications; may return null.
	 * @see #hasEmbeddedParameters()
	 */
	public ParameterSpecification[] getEmbeddedParameters();
}