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comparison artifacts/src/main/java/org/dive4elements/river/artifacts/datacage/templating/FunctionResolver.java @ 6933:468d9ebda4ce

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Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
author Sascha L. Teichmann <teichmann@intevation.de>
date Tue, 27 Aug 2013 19:14:12 +0200
parents 00aa1bc72a65
children 1dff8e71c4d6
comparison
equal deleted inserted replaced
6932:b78d110135ec 6933:468d9ebda4ce
8 8
9 package org.dive4elements.river.artifacts.datacage.templating; 9 package org.dive4elements.river.artifacts.datacage.templating;
10 10
11 import java.text.SimpleDateFormat; 11 import java.text.SimpleDateFormat;
12 import java.util.Collection; 12 import java.util.Collection;
13 import java.util.Collections;
13 import java.util.Date; 14 import java.util.Date;
14 import java.util.List; 15 import java.util.List;
15 import java.util.Map; 16 import java.util.Map;
16 import java.util.HashMap; 17 import java.util.HashMap;
18 import java.util.Set;
17 19
18 import java.lang.reflect.InvocationTargetException; 20 import java.lang.reflect.InvocationTargetException;
19 import java.lang.reflect.Method; 21 import java.lang.reflect.Method;
20 22
21 import javax.xml.namespace.QName; 23 import javax.xml.namespace.QName;
23 import javax.xml.xpath.XPathFunction; 25 import javax.xml.xpath.XPathFunction;
24 import javax.xml.xpath.XPathFunctionException; 26 import javax.xml.xpath.XPathFunctionException;
25 import javax.xml.xpath.XPathFunctionResolver; 27 import javax.xml.xpath.XPathFunctionResolver;
26 28
27 import org.apache.log4j.Logger; 29 import org.apache.log4j.Logger;
30 import org.dive4elements.artifactdatabase.transition.TransitionEngine;
31 import org.dive4elements.artifacts.GlobalContext;
32 import org.dive4elements.river.artifacts.context.RiverContext;
33 import org.dive4elements.river.artifacts.context.RiverContextFactory;
28 34
29 35
30 /** Resolves functions (e.g. dc:contains) in Datacage/Meta-Data system. */ 36 /** Resolves functions (e.g. dc:contains) in Datacage/Meta-Data system. */
31 public class FunctionResolver 37 public class FunctionResolver
32 implements XPathFunctionResolver 38 implements XPathFunctionResolver
147 if (o instanceof String) { 153 if (o instanceof String) {
148 return FunctionResolver.this.buildHelper.frames.getNull( 154 return FunctionResolver.this.buildHelper.frames.getNull(
149 (String)o, StackFrames.NULL); 155 (String)o, StackFrames.NULL);
150 } 156 }
151 return StackFrames.NULL; 157 return StackFrames.NULL;
158 }
159 });
160
161 addFunction("all-state-successors", 2, new XPathFunction() {
162 @Override
163 public Object evaluate(List args) throws XPathFunctionException {
164 Object artifactName = args.get(0);
165 Object stateId = args.get(1);
166
167 return artifactName instanceof String
168 && stateId instanceof String
169 ? allStateSuccessors((String)artifactName, (String)stateId)
170 : Collections.<String>emptySet();
152 } 171 }
153 }); 172 });
154 } 173 }
155 174
156 /** 175 /**
376 throw new XPathFunctionException(iae); 395 throw new XPathFunctionException(iae);
377 } 396 }
378 } 397 }
379 return ""; 398 return "";
380 } 399 }
400
401 public Set<String> allStateSuccessors(String artifactName, String stateId) {
402 GlobalContext gc = RiverContextFactory.getGlobalContext();
403 if (gc == null) {
404 return Collections.<String>emptySet();
405 }
406 Object o = gc.get(RiverContext.TRANSITION_ENGINE_KEY);
407 if (o instanceof TransitionEngine) {
408 TransitionEngine te = (TransitionEngine)o;
409 return te.allRecursiveSuccessorStateIds(artifactName, stateId);
410 }
411 return Collections.<String>emptySet();
412 }
381 } 413 }
382 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : 414 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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