001: //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/trunk/src/org/deegree/io/datastore/schema/MappedFeatureTypeReference.java $
002: /*---------------- FILE HEADER ------------------------------------------
003:
004: This file is part of deegree.
005: Copyright (C) 2001-2008 by:
006: EXSE, Department of Geography, University of Bonn
007: http://www.giub.uni-bonn.de/deegree/
008: lat/lon GmbH
009: http://www.lat-lon.de
010:
011: This library is free software; you can redistribute it and/or
012: modify it under the terms of the GNU Lesser General Public
013: License as published by the Free Software Foundation; either
014: version 2.1 of the License, or (at your option) any later version.
015:
016: This library is distributed in the hope that it will be useful,
017: but WITHOUT ANY WARRANTY; without even the implied warranty of
018: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019: Lesser General Public License for more details.
020:
021: You should have received a copy of the GNU Lesser General Public
022: License along with this library; if not, write to the Free Software
023: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024:
025: Contact:
026:
027: Andreas Poth
028: lat/lon GmbH
029: Aennchenstraße 19
030: 53177 Bonn
031: Germany
032: E-Mail: poth@lat-lon.de
033:
034: Prof. Dr. Klaus Greve
035: Department of Geography
036: University of Bonn
037: Meckenheimer Allee 166
038: 53115 Bonn
039: Germany
040: E-Mail: greve@giub.uni-bonn.de
041:
042: ---------------------------------------------------------------------------*/
043: package org.deegree.io.datastore.schema;
044:
045: import org.deegree.datatypes.QualifiedName;
046:
047: /**
048: * Represents a reference to a {@link MappedFeatureType}.
049: * <p>
050: * The reference may be resolved or not. If it is resolved, the referenced
051: * {@link MappedFeatureType} is accessible, otherwise only the name of the type is available.
052: *
053: * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider </a>
054: * @author last edited by: $Author: apoth $
055: *
056: * @version $Revision: 9342 $, $Date: 2007-12-27 04:32:57 -0800 (Thu, 27 Dec 2007) $
057: */
058: public class MappedFeatureTypeReference {
059:
060: private QualifiedName featureTypeName;
061:
062: private MappedFeatureType featureType;
063:
064: private boolean isResolved;
065:
066: /**
067: * Creates an unresolved <code>MappedFeatureTypeReference</code>.
068: *
069: * @param featureTypeName
070: */
071: public MappedFeatureTypeReference(QualifiedName featureTypeName) {
072: this .featureTypeName = featureTypeName;
073: }
074:
075: /**
076: * Returns the name of the referenced {@link MappedFeatureType}.
077: *
078: * @return the name of the referenced feature type
079: */
080: public QualifiedName getName() {
081: return this .featureTypeName;
082: }
083:
084: /**
085: * Returns true, if the reference has been resolved.
086: * <p>
087: * If this method returns true, {@link #getFeatureType()} will return the correct
088: * {@link MappedFeatureType} instance.
089: *
090: * @return true, if the reference has been resolved, false otherwise
091: */
092: public boolean isResolved() {
093: return this .isResolved;
094: }
095:
096: /**
097: * Returns the referenced {@link MappedFeatureType}.
098: * <p>
099: * This method will only return the correct {@link MappedFeatureType} instance, if
100: * the reference has been resolved by a call to {@link #resolve(MappedFeatureType)}.
101: *
102: * @return the referenced feature type, or null if it has not been resolved
103: */
104: public MappedFeatureType getFeatureType() {
105: return this .featureType;
106: }
107:
108: /**
109: * Sets the referenced {@link MappedFeatureType} instance.
110: *
111: * @param featureType
112: * @throws RuntimeException
113: * if the reference has been resolved already
114: */
115: public void resolve(MappedFeatureType featureType) {
116: if (isResolved()) {
117: throw new RuntimeException(
118: "MappedFeatureTypeReference to feature type '"
119: + featureTypeName
120: + "' has already been resolved.");
121: }
122: this .featureType = featureType;
123: this .isResolved = true;
124: }
125: }
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