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Diffstat (limited to 'scripting/java/com/sun/star/script/framework/provider/java/StrictResolver.java')
| -rw-r--r-- | scripting/java/com/sun/star/script/framework/provider/java/StrictResolver.java | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/scripting/java/com/sun/star/script/framework/provider/java/StrictResolver.java b/scripting/java/com/sun/star/script/framework/provider/java/StrictResolver.java new file mode 100644 index 000000000..08d06dce3 --- /dev/null +++ b/scripting/java/com/sun/star/script/framework/provider/java/StrictResolver.java @@ -0,0 +1,113 @@ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + +package com.sun.star.script.framework.provider.java; + +import com.sun.star.script.framework.log.LogUtils; + +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; + +/** + * A StrictResolver can be used to get a ScriptProxy object for a given + * ScriptDescriptor and Class. The StrictResolver is an implementation of + * the Resolver strategy. It will only return a ScriptProxy object if a + * method accepting all of the arguments specified in the ScriptDescriptor + * can be found in the Class. + */ +public class StrictResolver implements Resolver { + + /** + *Constructor for the StrictResolver object + */ + public StrictResolver() { + LogUtils.DEBUG(this.getClass().getName() + " created"); + } + + /** + * Returns a ScriptProxy object for the given ScriptDescriptor and Class. + * Only a strict match will be returned ie. where all of the arguments in + * the given ScriptDescriptor match the types of the + * + * @param sd the ScriptDescriptor for which a ScriptProxy is required + * @param c the Class file in which to search for the method + * @return the ScriptProxy matching the criteria, or null if no match is found + */ + public ScriptProxy getProxy(ScriptDescriptor sd, Class<?> c) throws + NoSuchMethodException { + + Method m = null; + + LogUtils.DEBUG("StrictResolver.getProxy() for: " + sd.toString()); + + try { + m = resolveArguments(sd, c); + } catch (ClassNotFoundException ex1) { + NoSuchMethodException ex2 = new NoSuchMethodException( + "StrictResolver.getProxy: Can't find method: " + sd.getMethodName()); + ex2.initCause(ex1); + throw ex2; + } catch (NoSuchMethodException ex1) { + NoSuchMethodException ex2 = new NoSuchMethodException( + "StrictResolver.getProxy: Can't find method: " + sd.getMethodName()); + ex2.initCause(ex1); + throw ex2; + } + + ScriptProxy sp = new ScriptProxy(m); + + int modifiers = m.getModifiers(); + + if (!Modifier.isStatic(modifiers)) { + Object o; + + try { + o = c.newInstance(); + } catch (InstantiationException ex1) { + NoSuchMethodException ex2 = new NoSuchMethodException( + "getScriptProxy: Can't instantiate: " + c.getName()); + ex2.initCause(ex1); + throw ex2; + } catch (IllegalAccessException ex1) { + NoSuchMethodException ex2 = new NoSuchMethodException( + "getScriptProxy: Can't access: " + c.getName()); + ex2.initCause(ex1); + throw ex2; + } + + sp.setTargetObject(o); + } + + return sp; + } + + /** + * Description of the Method + * + * @param sd Description of the Parameter + * @param c Description of the Parameter + * @return Description of the Return Value + * @exception ClassNotFoundException + * @exception NoSuchMethodException + */ + private Method resolveArguments(ScriptDescriptor sd, Class<?> c) throws + ClassNotFoundException, NoSuchMethodException { + + return c.getMethod(sd.getMethodName(), sd.getArgumentTypes()); + } +}
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