001: /*
002: * Copyright (c) 2003 The Visigoth Software Society. All rights
003: * reserved.
004: *
005: * Redistribution and use in source and binary forms, with or without
006: * modification, are permitted provided that the following conditions
007: * are met:
008: *
009: * 1. Redistributions of source code must retain the above copyright
010: * notice, this list of conditions and the following disclaimer.
011: *
012: * 2. Redistributions in binary form must reproduce the above copyright
013: * notice, this list of conditions and the following disclaimer in
014: * the documentation and/or other materials provided with the
015: * distribution.
016: *
017: * 3. The end-user documentation included with the redistribution, if
018: * any, must include the following acknowledgement:
019: * "This product includes software developed by the
020: * Visigoth Software Society (http://www.visigoths.org/)."
021: * Alternately, this acknowledgement may appear in the software itself,
022: * if and wherever such third-party acknowledgements normally appear.
023: *
024: * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
025: * project contributors may be used to endorse or promote products derived
026: * from this software without prior written permission. For written
027: * permission, please contact visigoths@visigoths.org.
028: *
029: * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
030: * nor may "FreeMarker" or "Visigoth" appear in their names
031: * without prior written permission of the Visigoth Software Society.
032: *
033: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
034: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
035: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
036: * DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
037: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
038: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
039: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
040: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
041: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
042: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
043: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
044: * SUCH DAMAGE.
045: * ====================================================================
046: *
047: * This software consists of voluntary contributions made by many
048: * individuals on behalf of the Visigoth Software Society. For more
049: * information on the Visigoth Software Society, please see
050: * http://www.visigoths.org/
051: */
052:
053: package freemarker.ext.jython;
054:
055: import org.python.core.PyException;
056: import org.python.core.PyObject;
057:
058: import freemarker.ext.util.ModelFactory;
059: import freemarker.template.ObjectWrapper;
060: import freemarker.template.TemplateCollectionModel;
061: import freemarker.template.TemplateModel;
062: import freemarker.template.TemplateModelException;
063: import freemarker.template.TemplateModelIterator;
064: import freemarker.template.TemplateSequenceModel;
065:
066: /**
067: * Model for Jython sequence objects ({@link org.python.core.PySequence} descendants).
068: * @version $Id: JythonSequenceModel.java,v 1.13 2003/11/12 21:53:40 ddekany Exp $
069: * @author Attila Szegedi
070: */
071: public class JythonSequenceModel extends JythonModel implements
072: TemplateSequenceModel, TemplateCollectionModel {
073: static final ModelFactory FACTORY = new ModelFactory() {
074: public TemplateModel create(Object object, ObjectWrapper wrapper) {
075: return new JythonSequenceModel((PyObject) object,
076: (JythonWrapper) wrapper);
077: }
078: };
079:
080: public JythonSequenceModel(PyObject object, JythonWrapper wrapper) {
081: super (object, wrapper);
082: }
083:
084: /**
085: * Returns {@link PyObject#__finditem__(int)}.
086: */
087: public TemplateModel get(int index) throws TemplateModelException {
088: try {
089: return wrapper.wrap(object.__finditem__(index));
090: } catch (PyException e) {
091: throw new TemplateModelException(e);
092: }
093: }
094:
095: /**
096: * Returns {@link PyObject#__len__()}.
097: */
098: public int size() throws TemplateModelException {
099: try {
100: return object.__len__();
101: } catch (PyException e) {
102: throw new TemplateModelException(e);
103: }
104: }
105:
106: public TemplateModelIterator iterator() {
107: return new TemplateModelIterator() {
108: int i = 0;
109:
110: public boolean hasNext() throws TemplateModelException {
111: return i < size();
112: }
113:
114: public TemplateModel next() throws TemplateModelException {
115: return get(i++);
116: }
117: };
118: }
119: }
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