[seam-commits] Seam SVN: r7477 - branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet.

Author: manaRH Date: 2008-02-26 09:25:36 -0500 (Tue, 26 Feb 2008) New Revision: 7477 Removed: branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/MethodExpressionHelper.java branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/OptionalParameterMethodExpression.java branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/ParamMethodExpression.java branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/SeamExpressionFactory.java Log: JBPAPP-631 - moved classes from org.jboss.seam.ui.facelet to org.jboss.seam.jsf Deleted: branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/MethodExpressionHelper.java =================================================================== --- branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/MethodExpressionHelper.java 2008-02-26 06:58:34 UTC (rev 7476) +++ branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/MethodExpressionHelper.java 2008-02-26 14:25:36 UTC (rev 7477) @@ -1,247 +0,0 @@ -/* - * JBoss, Home of Professional Open Source - * Copyright 2006, JBoss Inc., and individual contributors as indicated - * by the @authors tag. See the copyright.txt in the distribution for a - * full listing of individual contributors. - * - * This is free software; you can redistribute it and/or modify it - * under the terms of the GNU Lesser General Public License as - * published by the Free Software Foundation; either version 2.1 of - * the License, or (at your option) any later version. - * - * This software is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this software; if not, write to the Free - * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA, or see the FSF site: http://www.fsf.org. - */ - -package org.jboss.seam.ui.facelet; - -import java.io.Serializable; -import java.lang.reflect.Method; - -import javax.el.ELContext; -import javax.el.ELException; -import javax.el.MethodExpression; -import javax.el.MethodInfo; -import javax.el.ValueExpression; - -import org.jboss.seam.actionparam.MethodExpressionParser; - -/** - * This is a helper class for the ParamMethodExpression. - * - * @author Stan Silvert - */ -class MethodExpressionHelper implements Serializable -{ - - private String expWithParams; - private boolean isStringLiteral = false; - - private MethodExpressionParser parser; - - // The wrapped expression - private MethodExpression methodExp; - - // used for equals and hashCode - private boolean expressionInitializedInCtor = false; - private String hashString; - - - MethodExpressionHelper(ELContext elContext, - MethodExpressionParser parser) - { - this.expWithParams = parser.getUnparsedExpression(); - this.parser = parser; - - if ( MethodExpressionParser.isStringLiteral(expWithParams) ) - { - setMethodExpression(elContext, new Class[0]); - this.isStringLiteral = true; - this.expressionInitializedInCtor = true; - return; - } - - // if there are no params, we can go ahead and create the expression - if ( parser.getParams().length == 0 ) - { - setMethodExpression(elContext, new Class[0]); - this.expressionInitializedInCtor = true; - } - } - - boolean isLiteralText() - { - return this.isStringLiteral; - } - - MethodInfo getMethodInfo(ELContext elContext) - { - if (this.methodExp == null) - { - return new PartialMethodInfo(parser.getMethodName()); - } - - return this.methodExp.getMethodInfo(elContext); - } - - Object invokeTheExpression(ELContext elContext) - { - if (this.methodExp == null) - { - setMethodExpression(elContext, findParamTypes(elContext)); - } - - Object[] evaluatedParams = evaluateParams(elContext); - return this.methodExp.invoke(elContext, evaluatedParams); - } - - MethodExpression getExpression() - { - return this.methodExp; - } - - // evaluate each param as a value expression and return the array of results - private Object[] evaluateParams(ELContext elContext) - { - String[] params = parser.getParams(); - - Object[] results = new Object[params.length]; - - for (int i=0; i < results.length; i++) - { - String param = params[i].trim(); - - if ( MethodExpressionParser.isQuotedString(param) ) - { - // strip quotes - results[i] = param.substring(1, param.length() - 1); - continue; - } - - ValueExpression ve = SeamExpressionFactory.getFaceletsExpressionFactory() - .createValueExpression(elContext, "#{" + param + "}", Object.class); - results[i] = ve.getValue(elContext); - } - - return results; - } - - // finds a public method that matches the method - // name and number of params - private Class[] findParamTypes(ELContext elContext) - { - if (parser.getParams().length == 0) return new Class[0]; - - String expression = "#{" + parser.getBaseExpression() + "}"; - ValueExpression ve = SeamExpressionFactory.getFaceletsExpressionFactory(). - createValueExpression(elContext, expression, Object.class); - Object obj = ve.getValue(elContext); - Method[] publicMethods = obj.getClass().getMethods(); - - Method methodMatch = null; - - for (int i=0; i < publicMethods.length; i++) - { - if (methodMatches(publicMethods[i])) - { - if (methodMatch != null) - { - throw new ELException("More than one method matched " + - this.expWithParams + ". Method name or number of params must be unique."); - } - - methodMatch = publicMethods[i]; - } - } - - if (methodMatch == null) - { - throw new ELException("No method found for expression " + - this.expWithParams + - ". Method name and number of params must match."); - } - - return methodMatch.getParameterTypes(); - } - - // To match, method must return a String, match method name, and match - // number of params - private boolean methodMatches(Method method) - { - return method.getName().equals(parser.getMethodName()) && - (method.getParameterTypes().length == parser.getParams().length); - } - - private void setMethodExpression(ELContext elContext, Class[] paramTypes) - { - // note: returnType is always a String because this is an action method - this.methodExp = SeamExpressionFactory.getFaceletsExpressionFactory(). - createMethodExpression(elContext, - parser.getCombinedExpression(), - String.class, - paramTypes); - } - - private String getHashString() - { - if (this.hashString == null) - { - this.hashString = parser.getBaseExpression() + "." + - parser.getMethodName() + "." + - parser.getParams().length; - } - - return this.hashString; - } - - @Override - public boolean equals(Object object) - { - if (this == object) return true; - - if (this.expressionInitializedInCtor) - { - return this.methodExp.equals(object); - } - - if (!(object instanceof MethodExpressionHelper)) return false; - MethodExpressionHelper exp = (MethodExpressionHelper)object; - - return getHashString().equals(exp.getHashString()); - } - - @Override - public int hashCode() { - if (this.expressionInitializedInCtor) - { - return this.methodExp.hashCode(); - } - - return getHashString().hashCode(); - } - - /** - * Limited MethodInfo implementation that can be used when the param types are - * not yet known. - */ - private static class PartialMethodInfo extends MethodInfo - { - private PartialMethodInfo(String methodName) - { - super(methodName, Object.class, new Class[0]); - } - - @Override - public Class<?>[] getParamTypes() - { - throw new IllegalStateException("paramTypes unknown until MethodExpression is invoked."); - } - } -} \ No newline at end of file Deleted: branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/OptionalParameterMethodExpression.java =================================================================== --- branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/OptionalParameterMethodExpression.java 2008-02-26 06:58:34 UTC (rev 7476) +++ branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/OptionalParameterMethodExpression.java 2008-02-26 14:25:36 UTC (rev 7477) @@ -1,75 +0,0 @@ -/** - * - */ -package org.jboss.seam.ui.facelet; - -import javax.el.ELContext; -import javax.el.MethodExpression; -import javax.el.MethodInfo; -import javax.el.MethodNotFoundException; - -public class OptionalParameterMethodExpression extends MethodExpression - { - - private MethodExpression withParam; - private MethodExpression withNoParam; - - public OptionalParameterMethodExpression(MethodExpression withParam, MethodExpression withNoParam) - { - this.withParam = withParam; - this.withNoParam = withNoParam; - } - - @Override - public MethodInfo getMethodInfo(ELContext ctx) - { - return withParam.getMethodInfo(ctx); - } - - @Override - public Object invoke(ELContext ctx, Object[] args) - { - try - { - return withParam.invoke(ctx, args); - } - catch (MethodNotFoundException mnfe) - { - try - { - return withNoParam.invoke(ctx, new Object[0]); - } - catch (MethodNotFoundException mnfe2) - { - throw mnfe; - } - } - } - - @Override - public String getExpressionString() - { - return withParam.getExpressionString(); - } - - @Override - public boolean isLiteralText() - { - return withParam.isLiteralText(); - } - - @Override - public boolean equals(Object object) - { - if ( !(object instanceof OptionalParameterMethodExpression) ) return false; - OptionalParameterMethodExpression other = (OptionalParameterMethodExpression) object; - return withParam.equals(other.withParam); - } - - @Override - public int hashCode() - { - return withParam.hashCode(); - } - - } \ No newline at end of file Deleted: branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/ParamMethodExpression.java =================================================================== --- branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/ParamMethodExpression.java 2008-02-26 06:58:34 UTC (rev 7476) +++ branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/ParamMethodExpression.java 2008-02-26 14:25:36 UTC (rev 7477) @@ -1,92 +0,0 @@ -/* - * JBoss, Home of Professional Open Source - * Copyright 2006, JBoss Inc., and individual contributors as indicated - * by the @authors tag. See the copyright.txt in the distribution for a - * full listing of individual contributors. - * - * This is free software; you can redistribute it and/or modify it - * under the terms of the GNU Lesser General Public License as - * published by the Free Software Foundation; either version 2.1 of - * the License, or (at your option) any later version. - * - * This software is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this software; if not, write to the Free - * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA, or see the FSF site: http://www.fsf.org. - */ - -package org.jboss.seam.ui.facelet; - -import javax.el.ELContext; -import javax.el.ELException; -import javax.el.MethodExpression; -import javax.el.MethodInfo; -import javax.el.MethodNotFoundException; -import javax.el.PropertyNotFoundException; - -import org.jboss.seam.actionparam.MethodExpressionParser; - -/** - * TODO: make this into a StateHolder? - * - * @author Stan Silvert - */ -public class ParamMethodExpression extends MethodExpression -{ - - private MethodExpressionHelper helper; - private String expString; - - public ParamMethodExpression(MethodExpressionParser parser, - ELContext elContext) - { - this.expString = parser.getUnparsedExpression(); - this.helper = new MethodExpressionHelper(elContext, parser); - } - - @Override - public MethodInfo getMethodInfo(ELContext elContext) throws NullPointerException, PropertyNotFoundException, MethodNotFoundException, ELException - { - return this.helper.getMethodInfo(elContext); - } - - @Override - public Object invoke(ELContext elContext, Object[] params) throws NullPointerException, PropertyNotFoundException, MethodNotFoundException, ELException - { - // note that the params are ignored - they were cached by the helper - return this.helper.invokeTheExpression(elContext); - } - - @Override - public boolean isLiteralText() - { - return this.helper.isLiteralText(); - } - - @Override - public String getExpressionString() - { - return this.expString; - } - - @Override - public boolean equals(Object object) - { - if (this == object) return true; - if (!(object instanceof ParamMethodExpression)) return false; - ParamMethodExpression actionExpression = (ParamMethodExpression)object; - - return this.helper.equals(actionExpression.helper); - } - - @Override - public int hashCode() - { - return this.helper.hashCode(); - } -} Deleted: branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/SeamExpressionFactory.java =================================================================== --- branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/SeamExpressionFactory.java 2008-02-26 06:58:34 UTC (rev 7476) +++ branches/Seam_1_2_1_AP/src/ui/org/jboss/seam/ui/facelet/SeamExpressionFactory.java 2008-02-26 14:25:36 UTC (rev 7477) @@ -1,110 +0,0 @@ -/* - * JBoss, Home of Professional Open Source - * Copyright 2006, JBoss Inc., and individual contributors as indicated - * by the @authors tag. See the copyright.txt in the distribution for a - * full listing of individual contributors. - * - * This is free software; you can redistribute it and/or modify it - * under the terms of the GNU Lesser General Public License as - * published by the Free Software Foundation; either version 2.1 of - * the License, or (at your option) any later version. - * - * This software is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this software; if not, write to the Free - * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA, or see the FSF site: http://www.fsf.org. - */ - -package org.jboss.seam.ui.facelet; - -import javax.el.ELContext; -import javax.el.ExpressionFactory; -import javax.el.MethodExpression; -import javax.el.ValueExpression; -import javax.faces.event.FacesEvent; - -import org.jboss.seam.actionparam.MethodExpressionParser; - -import com.sun.facelets.compiler.SAXCompiler; - -/** - * This ExpressionFactory replaces the one normally used in Facelets. It - * recognizes if an EL expression is using params. If so, it will return a - * special implementation of MethodExpression or ValueExpression to handle it. - * - * @author Stan Silvert - */ -public class SeamExpressionFactory extends ExpressionFactory -{ - private static ExpressionFactory faceletsExpressionFactory; - - static - { - // wrap the ExpressionFactory that Facelets would have created - SAXCompiler compiler = new SAXCompiler(); - faceletsExpressionFactory = compiler.createExpressionFactory(); - } - - public SeamExpressionFactory() {} - - /** - * Note default access. Other classes in this package use this factory - * to create EL Expressions. - */ - static ExpressionFactory getFaceletsExpressionFactory() - { - return faceletsExpressionFactory; - } - - @Override - public Object coerceToType(Object obj, Class targetType) - { - return faceletsExpressionFactory.coerceToType(obj, targetType); - } - - @Override - public MethodExpression createMethodExpression(ELContext elContext, - String expression, - Class returnType, - Class[] paramTypes) - { - MethodExpressionParser parser = new MethodExpressionParser(expression); - if ( parser.isParamExpression() ) - { - return new ParamMethodExpression(parser, elContext); - } - else if ( paramTypes.length==1 && FacesEvent.class.isAssignableFrom( paramTypes[0] ) ) - { - //so that JSF action listeners don't have to declare - //the totally frickin useless ActionEvent parameter - return new OptionalParameterMethodExpression( - faceletsExpressionFactory.createMethodExpression(elContext, expression, returnType, paramTypes), - faceletsExpressionFactory.createMethodExpression(elContext, expression, returnType, new Class[0]) - ); - } - else - { - return faceletsExpressionFactory.createMethodExpression(elContext, expression, returnType, paramTypes); - } - } - - @Override - public ValueExpression createValueExpression(Object instance, Class expectedType) - { - return faceletsExpressionFactory.createValueExpression(instance, expectedType); - } - - @Override - public ValueExpression createValueExpression(ELContext elContext, - String expression, - Class expectedType) - { - return faceletsExpressionFactory.createValueExpression(elContext, expression, expectedType); - } - -} \ No newline at end of file