/*
* eXist Open Source Native XML Database
* Copyright (C) 2008-2010 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.xslt.expression;
import org.exist.dom.DocumentSet;
import org.exist.dom.QName;
import org.exist.interpreter.ContextAtExist;
import org.exist.xquery.AnalyzeContextInfo;
import org.exist.xquery.Variable;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.util.ExpressionDumper;
import org.exist.xquery.value.Item;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.Type;
import org.exist.xslt.XSLContext;
import org.exist.xslt.expression.i.Parameted;
import org.exist.xslt.pattern.Pattern;
import org.w3c.dom.Attr;
/**
* <!-- Category: declaration -->
* <xsl:param
* name = qname
* select? = expression
* as? = sequence-type
* required? = "yes" | "no"
* tunnel? = "yes" | "no">
* <!-- Content: sequence-constructor -->
* </xsl:param>
*
* @author <a href="mailto:shabanovd@gmail.com">Dmitriy Shabanov</a>
*
*/
public class Param extends Declaration implements Variable {
private String attr_select = null;
private QName name = null;
private XSLPathExpr select = null;
private String as = null;
private Boolean required = null;
private Boolean tunnel = null;
public Param(XSLContext context) {
super(context);
}
public void setToDefaults() {
attr_select = null;
name = null;
select = null;
as = null;
required = null;
tunnel = null;
}
public void prepareAttribute(ContextAtExist context, Attr attr) throws XPathException {
String attr_name = attr.getLocalName();
if (attr_name.equals(NAME)) {
name = new QName(attr.getValue());
} else if (attr_name.equals(SELECT)) {
attr_select = attr.getValue();
} else if (attr_name.equals(AS)) {
as = attr.getValue();
} else if (attr_name.equals(REQUIRED)) {
required = getBoolean(attr.getValue());
} else if (attr_name.equals(TUNNEL)) {
tunnel = getBoolean(attr.getValue());
}
}
public void analyze(AnalyzeContextInfo contextInfo) throws XPathException {
if (contextInfo.getParent() instanceof Parameted) {
Parameted parameted = (Parameted) contextInfo.getParent();
parameted.addXSLParam(this);
} else {
throw new XPathException("wrong parent");//XXX: error
}
super.analyze(contextInfo);
if (attr_select != null) {
select = new XSLPathExpr(getXSLContext());
Pattern.parse(contextInfo.getContext(), attr_select, select);
_check_(select);
}
}
public Sequence eval(Sequence contextSequence, Item contextItem) throws XPathException {
if (name != null && select == null) {
Variable var = getXSLContext().resolveVariable(name);
Sequence result = var.getValue();
if (as != null)
return result.convertTo(Type.getType(as));
return result;
} else if (select != null) {
Sequence result = select.eval(contextSequence, contextItem);
if (as != null)
result = result.convertTo(Type.getType(as));
context.declareVariable(getName(), result);
return result;
}
throw new XPathException("param can't calculated");//TODO: error?
}
/* (non-Javadoc)
* @see org.exist.xquery.Expression#dump(org.exist.xquery.util.ExpressionDumper)
*/
public void dump(ExpressionDumper dumper) {
dumper.display("<xsl:param");
if (getName() != null) {
dumper.display(" name = ");
dumper.display(getName());
}
if (select != null) {
dumper.display(" select = ");
dumper.display(select);
}
if (as != null) {
dumper.display(" as = ");
dumper.display(as);
}
if (required != null) {
dumper.display(" required = ");
dumper.display(required);
}
if (tunnel != null) {
dumper.display(" tunnel = ");
dumper.display(tunnel);
}
super.dump(dumper);
dumper.display("</xsl:param>");
}
public String toString() {
StringBuilder result = new StringBuilder();
result.append("<xsl:param");
if (getName() != null)
result.append(" name = "+getName().toString());
if (select != null)
result.append(" select = "+select.toString());
if (as != null)
result.append(" as = "+as.toString());
if (required != null)
result.append(" required = "+required.toString());
if (tunnel != null)
result.append(" tunnel = "+tunnel.toString());
result.append("> ");
result.append(super.toString());
result.append("</xsl:param> ");
return result.toString();
}
/**
* @return the name
*/
public QName getName() {
return name;
}
@Override
public void setValue(Sequence val) {
// TODO Auto-generated method stub
}
@Override
public Sequence getValue() {
// TODO Auto-generated method stub
if (select != null) {
try {
return select.eval(null, null);
} catch (XPathException e) {
}
}
return null;
//throw new XPathException("param can't calculated");//TODO: error?
}
@Override
public QName getQName() {
return getName();
}
@Override
public int getType() {
// TODO Auto-generated method stub
return 0;
}
@Override
public void setSequenceType(SequenceType type) throws XPathException {
// TODO Auto-generated method stub
}
@Override
public SequenceType getSequenceType() {
// TODO Auto-generated method stub
return null;
}
@Override
public void setStaticType(int type) {
// TODO Auto-generated method stub
}
@Override
public int getStaticType() {
// TODO Auto-generated method stub
return 0;
}
@Override
public boolean isInitialized() {
// TODO Auto-generated method stub
return true;
}
@Override
public void setIsInitialized(boolean initialized) {
// TODO Auto-generated method stub
}
@Override
public int getDependencies(XQueryContext context) {
// TODO Auto-generated method stub
return 0;
}
@Override
public void setStackPosition(int position) {
// TODO Auto-generated method stub
}
@Override
public DocumentSet getContextDocs() {
// TODO Auto-generated method stub
return null;
}
@Override
public void setContextDocs(DocumentSet docs) {
// TODO Auto-generated method stub
}
@Override
public void checkType() throws XPathException {
// TODO Auto-generated method stub
}
}