/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.ode.bpel.elang.xpath10.o;
import org.apache.ode.bpel.o.OBase;
import org.apache.ode.bpel.o.OExpression;
import org.apache.ode.bpel.o.OLValueExpression;
import org.apache.ode.bpel.o.OLink;
import org.apache.ode.bpel.o.OMessageVarType;
import org.apache.ode.bpel.o.OProcess;
import org.apache.ode.bpel.o.OScope;
import org.apache.ode.bpel.o.OScope.Variable;
import org.apache.ode.bpel.o.OXslSheet;
import org.apache.ode.utils.NSContext;
import javax.xml.namespace.QName;
import java.io.Serializable;
import java.net.URI;
import java.util.HashMap;
/**
* Jaxen-based compiled-xpath representation for XPATH 1.0 expression language.
*/
public class OXPath10Expression extends OLValueExpression implements Serializable {
private static final long serialVersionUID = -1L;
/** Map from query name to variable declaration. */
public HashMap<String, OScope.Variable> vars =
new HashMap<String, OScope.Variable>();
public final HashMap<String, OProcess.OProperty> properties =
new HashMap<String, OProcess.OProperty>();
public final HashMap<String, OLink> links = new HashMap<String,OLink>();
public final HashMap<URI,OXslSheet> xslSheets = new HashMap<URI, OXslSheet>();
/** Map getVariableData invocation signature to compiled objects. */
private final HashMap<SigGetVariableData,OSigGetVariableData> _getVariableDataSigs =
new HashMap<SigGetVariableData,OSigGetVariableData>();
public String xpath;
public NSContext namespaceCtx;
/** QName of the <code>bpws:getVariableData</code> function. */
public final QName qname_getVariableData;
/** QName of the <code>bpws:getVariableData</code> function. */
public final QName qname_getVariableProperty;
/** QName of the <code>bpws:getVariableData</code> function. */
public final QName qname_getLinkStatus;
public OXPath10Expression(OProcess owner,
QName qname_getVariableData,
QName qname_getVariableProperty,
QName qname_getLinkStatus) {
super(owner);
this.qname_getLinkStatus = qname_getLinkStatus;
this.qname_getVariableData = qname_getVariableData;
this.qname_getVariableProperty = qname_getVariableProperty;
}
/**
* Get the compiled representation of a certain <code>bpws:getVariableData(...)</code> call.
* @param varname variable name
* @param partname part name
* @param location location query
* @return compiled representation, or <code>null</code> if none found
*/
public OSigGetVariableData resolveGetVariableDataSig(String varname, String partname, String location) {
SigGetVariableData key = new SigGetVariableData(varname, partname, location);
return _getVariableDataSigs.get(key);
}
/**
* Add a compiled representation for a certain <code>bpws:getVariableData(...)</code> call.
* @param varname variable name
* @param partname part name
* @param location location query
* @param compiled compiled representation
*/
public void addGetVariableDataSig(String varname, String partname, String location, OSigGetVariableData compiled) {
_getVariableDataSigs.put(new SigGetVariableData(varname, partname, location), compiled);
}
public String toString() {
return "{OXPath10Expression " + xpath + "}";
}
/**
* Data structure representing the signature of a <code>bpws:getVariableData</code>
* invocation.
*/
private static final class SigGetVariableData implements Serializable {
private static final long serialVersionUID = -1L;
private final String varname;
private final String partname;
private final String location;
private SigGetVariableData(String varname, String partname, String location) {
this.varname = varname;
this.partname = partname;
this.location = location;
}
public boolean equals(Object obj) {
SigGetVariableData other = (SigGetVariableData) obj;
if (varname != null && (other.varname == null || !varname.equals(other.varname)))
return false;
if (partname != null && (other.partname == null || !partname.equals(other.partname)))
return false;
if (location != null && (other.location == null || !location.equals(other.location)))
return false;
return true;
}
public int hashCode() {
int hashCode = 0;
if (varname != null) hashCode ^= varname.hashCode();
if (partname != null) hashCode ^= partname.hashCode();
if (location != null) hashCode ^= location.hashCode();
return hashCode;
}
}
/**
* Data structure representing the compiled signature of a <code>bpws:getVariableData</code>
* invocation.
*/
public static final class OSigGetVariableData extends OBase {
private static final long serialVersionUID = -1L;
public final OScope.Variable variable;
public final OMessageVarType.Part part;
public final OExpression location;
public OSigGetVariableData(OProcess owner, OScope.Variable variable, OMessageVarType.Part part, OExpression location) {
super(owner);
this.variable = variable;
this.part = part;
this.location = location;
}
}
/**
* @see org.apache.ode.bpel.o.OLValueExpression#getVariable()
*/
public Variable getVariable() {
if(vars.size() == 0)
throw new IllegalStateException("LValue must have one variable reference.");
// We're interested in the first variable referenced by the LValue
for (String varName : vars.keySet()) {
if (xpath.substring(1, xpath.length()).startsWith(varName))
return vars.get(varName);
}
throw new IllegalStateException("Either the expression doesn't start with a variable reference or " +
"the reference is unknow.");
}
}