| /* |
| * 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.xpath20.runtime; |
| |
| import javax.xml.namespace.QName; |
| import javax.xml.xpath.XPathVariableResolver; |
| |
| import net.sf.saxon.Configuration; |
| import net.sf.saxon.type.AtomicType; |
| import net.sf.saxon.type.SchemaType; |
| import net.sf.saxon.type.ValidationException; |
| import net.sf.saxon.value.AtomicValue; |
| import net.sf.saxon.value.EmptySequence; |
| import net.sf.saxon.value.StringValue; |
| import net.sf.saxon.value.Value; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.ode.bpel.common.FaultException; |
| import org.apache.ode.bpel.elang.xpath10.obj.OXPath10ExpressionBPEL20; |
| import org.apache.ode.bpel.elang.xpath20.compiler.WrappedResolverException; |
| import org.apache.ode.bpel.explang.EvaluationContext; |
| import org.apache.ode.bpel.obj.OLink; |
| import org.apache.ode.bpel.obj.OMessageVarType; |
| import org.apache.ode.bpel.obj.OScope; |
| import org.apache.ode.bpel.obj.OXsdTypeVarType; |
| import org.apache.ode.utils.DOMUtils; |
| import org.apache.ode.utils.Namespaces; |
| import org.w3c.dom.Node; |
| |
| /** |
| * @author mriou <mriou at apache dot org> |
| */ |
| public class JaxpVariableResolver implements XPathVariableResolver { |
| |
| private static final Log __log = LogFactory.getLog(JaxpVariableResolver.class); |
| |
| private EvaluationContext _ectx; |
| private OXPath10ExpressionBPEL20 _oxpath; |
| private Configuration _config; |
| |
| public JaxpVariableResolver(EvaluationContext ectx, OXPath10ExpressionBPEL20 oxpath, Configuration config) { |
| _ectx = ectx; |
| _oxpath = oxpath; |
| _config = config; |
| } |
| |
| public Object resolveVariable(QName variableName) { |
| if (__log.isDebugEnabled()) { |
| __log.debug("Resolving variable " + variableName); |
| } |
| |
| if (!(_oxpath instanceof OXPath10ExpressionBPEL20)) { |
| throw new IllegalStateException("XPath variables not supported for bpel 1.1"); |
| } |
| |
| // Custom variables |
| if (variableName.getNamespaceURI().equals(Namespaces.ODE_EXTENSION_NS)) { |
| if ("pid".equals(variableName.getLocalPart())) { |
| return _ectx.getProcessId(); |
| } else if ("processQName".equals(variableName.getLocalPart())) { |
| return _ectx.getProcessQName(); |
| } |
| if ("currentEventDateTime".equals(variableName.getLocalPart())) { |
| return _ectx.getCurrentEventDateTime(); |
| } |
| } |
| |
| OXPath10ExpressionBPEL20 expr = _oxpath; |
| if (expr.isIsJoinExpression()) { |
| OLink olink = _oxpath.getLinks().get(variableName.getLocalPart()); |
| |
| try { |
| return _ectx.isLinkActive(olink) ? Boolean.TRUE : Boolean.FALSE; |
| } catch (FaultException e) { |
| throw new WrappedResolverException(e); |
| } |
| } else { |
| String varName; |
| String partName; |
| int dotloc = variableName.getLocalPart().indexOf('.'); |
| if (dotloc == -1) { |
| varName = variableName.getLocalPart(); |
| partName = null; |
| } else { |
| varName = variableName.getLocalPart().substring(0, dotloc); |
| partName = variableName.getLocalPart().substring(dotloc + 1); |
| } |
| OScope.Variable variable = _oxpath.getVars().get(varName); |
| OMessageVarType.Part part = partName == null ? null : ((OMessageVarType) variable.getType()).getParts().get(partName); |
| |
| try { |
| final Node variableNode = _ectx.readVariable(variable, part); |
| if (variableNode == null) |
| throw new FaultException(variable.getOwner().getConstants().getQnSelectionFailure(), "Unknown variable " + variableName.getLocalPart()); |
| if (_ectx.narrowTypes()) { |
| if (variable.getType() instanceof OXsdTypeVarType && ((OXsdTypeVarType) variable.getType()).isSimple()) |
| return getSimpleContent(variableNode, ((OXsdTypeVarType) variable.getType()).getXsdType()); |
| if (part != null && part.getType() instanceof OXsdTypeVarType && ((OXsdTypeVarType) part.getType()).isSimple()) |
| return getSimpleContent(variableNode, ((OXsdTypeVarType) part.getType()).getXsdType()); |
| } |
| |
| // Saxon used to expect a node list, but now a regular node will suffice. |
| return variableNode; |
| } catch (FaultException e) { |
| throw new WrappedResolverException(e); |
| } |
| } |
| } |
| |
| public Value convertSimpleTypeToSaxon(QName type, String value) { |
| int fp = _config.getNamePool().allocate("", type.getNamespaceURI(), type.getLocalPart()); |
| SchemaType type2 = _config.getSchemaType(fp); |
| if (type2 == null || !type2.isAtomicType()) { |
| __log.warn("Can't find simple type " + type + " value " + value + " result: " + null); |
| return null; |
| } else { |
| try { |
| AtomicValue value2 = StringValue.convertStringToAtomicType(value, (AtomicType) type2, null).asAtomic(); |
| if (__log.isDebugEnabled()) { |
| __log.debug("converting " + type + " value " + value + " result: " + value2); |
| } |
| return value2; |
| } catch (ValidationException e) { |
| __log.debug("Can't convert " + value + " to " + type + " returning empty sequence"); |
| return EmptySequence.getInstance(); |
| } |
| } |
| } |
| |
| public Object getSimpleContent(Node simpleNode, QName type) { |
| String text = simpleNode.getTextContent(); |
| Object o = convertSimpleTypeToSaxon(type, text); |
| if (__log.isDebugEnabled()) { |
| __log.debug("getSimpleContent for " + DOMUtils.domToString(simpleNode) + " " + type + " returned " + o); |
| } |
| return o; |
| } |
| } |