X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.common%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fcommon%2FEvaluatorDataImpl.java;fp=bundles%2Forg.simantics.browsing.ui.common%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fcommon%2FEvaluatorDataImpl.java;h=d6e7011a9b1fe836c7dbaa11e58445b32bfcffe2;hp=6c7c588ee23d05737bc8da5791bd871b916cde28;hb=0ae2b770234dfc3cbb18bd38f324125cf0faca07;hpb=24e2b34260f219f0d1644ca7a138894980e25b14 diff --git a/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/EvaluatorDataImpl.java b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/EvaluatorDataImpl.java index 6c7c588ee..d6e7011a9 100644 --- a/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/EvaluatorDataImpl.java +++ b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/EvaluatorDataImpl.java @@ -1,211 +1,211 @@ -/******************************************************************************* - * Copyright (c) 2007, 2010 Association for Decentralized Information Management - * in Industry THTH ry. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * VTT Technical Research Centre of Finland - initial API and implementation - *******************************************************************************/ -package org.simantics.browsing.ui.common; - -import java.util.ArrayDeque; -import java.util.ArrayList; -import java.util.Collection; -import java.util.Collections; -import java.util.Deque; -import java.util.HashMap; -import java.util.HashSet; -import java.util.Map; -import java.util.Set; - -/** - * The default implementation of EvaluatorData. - * - *

- * Evaluators can be added by invoking - * {@link #addEvaluator(Class, org.simantics.browsing.ui.common.EvaluatorData.Evaluator) - * or {@link #addEvaluators(Class, Collection)}. The specified - * Evaluator or collection of Evaluators are bound to - * the specified Java class. The reason for such a binding is that the - * implementation of {@link #get(Object)} is based on comparing the input object - * class to the classes specified to the addEvaluator methods. The - * comparison works so that an Evaluator will be added to the - * result of {@link #get(Object)} if: - *

- * - * - *

- * This implementation keeps a Class→Evaluator - * cache of previous results thus quickly producing results for a given input - * object class after the result has been cached. Note that there is no way to - * reset the cache, i.e. this class is intended to be initialized once, used - * after that and finally thrown away. Do not add evaluators once in use, they - * may or may not be reflected in the results. - *

- * - * @author Tuukka Lehtonen - */ -public class EvaluatorDataImpl implements EvaluatorData { - - private static final boolean DEBUG = false; - - /** - * Contains only the original evaluator associations made directly by the - * client. This is used for initializing the evaluators cache - * for different inputs. - */ - protected HashMap, Collection> originals = new HashMap, Collection>(); - - /** - * A cache that is only modified by - * {@link #findAndCacheEvaluatorsForClass(Class)}. This map is not filled in - * by client's initialization efforts. - */ - protected HashMap, Collection> evaluators = new HashMap, Collection>(); - - private Object browseContext; - - public EvaluatorDataImpl() { - } - - public void setBrowseContext(Object browseContext) { - this.browseContext = browseContext; - } - - @Override - public Evaluator newEvaluator() { - return new EvaluatorImpl(); - } - - private synchronized void addEvaluator(HashMap, Collection> map, Class clazz, Evaluator eval) { - Collection es = map.get(clazz); - if (es == null) { - es = new ArrayList(); - map.put(clazz, es); - } - es.add(eval); - if (DEBUG) { -// new Exception().printStackTrace(); - System.out.println("EvaluatorDataImpl: ADDED Evaluator: " + clazz + ": " + eval); - } - } - - private synchronized void addEvaluators(HashMap, Collection> map, Class clazz, Collection evals) { - Collection es = map.get(clazz); - if (es == null) { - es = new ArrayList(); - map.put(clazz, es); - } - es.addAll(evals); - if (DEBUG) - System.out.println("EvaluatorDataImpl: ADDED Evaluators: " + clazz + ": " + evals); - } - - public synchronized void addEvaluator(Class clazz, Evaluator eval) { - addEvaluator(originals, clazz, eval); - } - - public synchronized void addEvaluators(Class clazz, Collection evals) { - addEvaluators(originals, clazz, evals); - } - - @Override - public Collection get(Object object) { - Class clazz = object.getClass(); - Collection evaluator = evaluators.get(clazz); - if (evaluator != null) { - if (DEBUG) - System.out.println("EvaluatorDataImpl: get cached: " + clazz + ": " + evaluator); - return evaluator; - } - - Collection evals = findAndCacheEvaluatorsForClass(clazz); - if (DEBUG) { - System.out.println("EvaluatorDataImpl: get: " + clazz + ": " + evals); - if (evals.isEmpty()) { - System.out.println("EvaluatorDataImpl: no match, evaluators available:"); - for (Map.Entry, Collection> e : evaluators.entrySet()) { - if (!e.getValue().isEmpty()) - System.out.println(" " + e.getKey() + " : " + e.getValue()); - } - } - } - return evals; - } - - private synchronized Collection findAndCacheEvaluatorsForClass(Class clazz) { - if (DEBUG) - System.out.println("EvaluatorDataImpl: caching evaluators for " + clazz); - Set> usedClasses = new HashSet>(); - Set used = new HashSet(); - Collection result = new ArrayList(); - Deque> fifo = new ArrayDeque>(); - fifo.add(clazz); - while (!fifo.isEmpty()) { - Class c = fifo.removeFirst(); - if (!usedClasses.add(c)) - continue; - Class superClass = c.getSuperclass(); - if (superClass != null) - fifo.addLast(superClass); - for (Class i : c.getInterfaces()) - fifo.addLast(i); - Collection evals = originals.get(c); - if (evals != null) - for (Evaluator eval : evals) - if (used.add(eval)) - result.add(eval); - } - if (result.isEmpty()) { - result = Collections.emptyList(); - } - evaluators.put(clazz, result); - return result; - } - - @Override - public Collection enumEvaluators() { - Collection result = new ArrayList(); - for (Map.Entry, Collection> entry : originals.entrySet()) { - result.add(new EvaluatorEntryImpl(entry.getKey(), entry.getValue())); - } - return result; - } - - static class EvaluatorEntryImpl implements EvaluatorEntry { - private final Class clazz; - private final Collection evaluators; - - public EvaluatorEntryImpl(Class clazz, Collection evaluators) { - this.clazz = clazz; - this.evaluators = evaluators; - } - - @Override - public Class getClazz() { - return clazz; - } - - @Override - public Collection getEvaluators() { - return evaluators; - } - - @Override - public String toString() { - return "class " + clazz.getSimpleName(); - } - } - - @SuppressWarnings("unchecked") - @Override - public T getBrowseContext() { - return (T)browseContext; - } - -} +/******************************************************************************* + * Copyright (c) 2007, 2010 Association for Decentralized Information Management + * in Industry THTH ry. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * VTT Technical Research Centre of Finland - initial API and implementation + *******************************************************************************/ +package org.simantics.browsing.ui.common; + +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.Deque; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Map; +import java.util.Set; + +/** + * The default implementation of EvaluatorData. + * + *

+ * Evaluators can be added by invoking + * {@link #addEvaluator(Class, org.simantics.browsing.ui.common.EvaluatorData.Evaluator) + * or {@link #addEvaluators(Class, Collection)}. The specified + * Evaluator or collection of Evaluators are bound to + * the specified Java class. The reason for such a binding is that the + * implementation of {@link #get(Object)} is based on comparing the input object + * class to the classes specified to the addEvaluator methods. The + * comparison works so that an Evaluator will be added to the + * result of {@link #get(Object)} if: + *

+ *
    + *
  • the input object is assignable to the Evaluator's class + *
+ * + *

+ * This implementation keeps a Class→Evaluator + * cache of previous results thus quickly producing results for a given input + * object class after the result has been cached. Note that there is no way to + * reset the cache, i.e. this class is intended to be initialized once, used + * after that and finally thrown away. Do not add evaluators once in use, they + * may or may not be reflected in the results. + *

+ * + * @author Tuukka Lehtonen + */ +public class EvaluatorDataImpl implements EvaluatorData { + + private static final boolean DEBUG = false; + + /** + * Contains only the original evaluator associations made directly by the + * client. This is used for initializing the evaluators cache + * for different inputs. + */ + protected HashMap, Collection> originals = new HashMap, Collection>(); + + /** + * A cache that is only modified by + * {@link #findAndCacheEvaluatorsForClass(Class)}. This map is not filled in + * by client's initialization efforts. + */ + protected HashMap, Collection> evaluators = new HashMap, Collection>(); + + private Object browseContext; + + public EvaluatorDataImpl() { + } + + public void setBrowseContext(Object browseContext) { + this.browseContext = browseContext; + } + + @Override + public Evaluator newEvaluator() { + return new EvaluatorImpl(); + } + + private synchronized void addEvaluator(HashMap, Collection> map, Class clazz, Evaluator eval) { + Collection es = map.get(clazz); + if (es == null) { + es = new ArrayList(); + map.put(clazz, es); + } + es.add(eval); + if (DEBUG) { +// new Exception().printStackTrace(); + System.out.println("EvaluatorDataImpl: ADDED Evaluator: " + clazz + ": " + eval); + } + } + + private synchronized void addEvaluators(HashMap, Collection> map, Class clazz, Collection evals) { + Collection es = map.get(clazz); + if (es == null) { + es = new ArrayList(); + map.put(clazz, es); + } + es.addAll(evals); + if (DEBUG) + System.out.println("EvaluatorDataImpl: ADDED Evaluators: " + clazz + ": " + evals); + } + + public synchronized void addEvaluator(Class clazz, Evaluator eval) { + addEvaluator(originals, clazz, eval); + } + + public synchronized void addEvaluators(Class clazz, Collection evals) { + addEvaluators(originals, clazz, evals); + } + + @Override + public Collection get(Object object) { + Class clazz = object.getClass(); + Collection evaluator = evaluators.get(clazz); + if (evaluator != null) { + if (DEBUG) + System.out.println("EvaluatorDataImpl: get cached: " + clazz + ": " + evaluator); + return evaluator; + } + + Collection evals = findAndCacheEvaluatorsForClass(clazz); + if (DEBUG) { + System.out.println("EvaluatorDataImpl: get: " + clazz + ": " + evals); + if (evals.isEmpty()) { + System.out.println("EvaluatorDataImpl: no match, evaluators available:"); + for (Map.Entry, Collection> e : evaluators.entrySet()) { + if (!e.getValue().isEmpty()) + System.out.println(" " + e.getKey() + " : " + e.getValue()); + } + } + } + return evals; + } + + private synchronized Collection findAndCacheEvaluatorsForClass(Class clazz) { + if (DEBUG) + System.out.println("EvaluatorDataImpl: caching evaluators for " + clazz); + Set> usedClasses = new HashSet>(); + Set used = new HashSet(); + Collection result = new ArrayList(); + Deque> fifo = new ArrayDeque>(); + fifo.add(clazz); + while (!fifo.isEmpty()) { + Class c = fifo.removeFirst(); + if (!usedClasses.add(c)) + continue; + Class superClass = c.getSuperclass(); + if (superClass != null) + fifo.addLast(superClass); + for (Class i : c.getInterfaces()) + fifo.addLast(i); + Collection evals = originals.get(c); + if (evals != null) + for (Evaluator eval : evals) + if (used.add(eval)) + result.add(eval); + } + if (result.isEmpty()) { + result = Collections.emptyList(); + } + evaluators.put(clazz, result); + return result; + } + + @Override + public Collection enumEvaluators() { + Collection result = new ArrayList(); + for (Map.Entry, Collection> entry : originals.entrySet()) { + result.add(new EvaluatorEntryImpl(entry.getKey(), entry.getValue())); + } + return result; + } + + static class EvaluatorEntryImpl implements EvaluatorEntry { + private final Class clazz; + private final Collection evaluators; + + public EvaluatorEntryImpl(Class clazz, Collection evaluators) { + this.clazz = clazz; + this.evaluators = evaluators; + } + + @Override + public Class getClazz() { + return clazz; + } + + @Override + public Collection getEvaluators() { + return evaluators; + } + + @Override + public String toString() { + return "class " + clazz.getSimpleName(); + } + } + + @SuppressWarnings("unchecked") + @Override + public T getBrowseContext() { + return (T)browseContext; + } + +}