| package org.apache.commons.ognl; |
| |
| /* |
| * 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. |
| */ |
| |
| import org.apache.commons.ognl.enhance.ExpressionCompiler; |
| import org.apache.commons.ognl.enhance.OrderedReturn; |
| |
| /** |
| * $Id$ |
| */ |
| public class ASTSequence |
| extends SimpleNode |
| implements NodeType, OrderedReturn |
| { |
| private Class getterClass; |
| |
| private String lastExpression; |
| |
| private String coreExpression; |
| |
| public ASTSequence( int id ) |
| { |
| super( id ); |
| } |
| |
| public ASTSequence( OgnlParser p, int id ) |
| { |
| super( p, id ); |
| } |
| |
| public void jjtClose() |
| { |
| flattenTree(); |
| } |
| |
| protected Object getValueBody( OgnlContext context, Object source ) |
| throws OgnlException |
| { |
| Object result = null; |
| for ( int i = 0; i < children.length; ++i ) |
| { |
| result = children[i].getValue( context, source ); |
| } |
| |
| return result; // The result is just the last one we saw. |
| } |
| |
| protected void setValueBody( OgnlContext context, Object target, Object value ) |
| throws OgnlException |
| { |
| int last = children.length - 1; |
| for ( int i = 0; i < last; ++i ) |
| { |
| children[i].getValue( context, target ); |
| } |
| children[last].setValue( context, target, value ); |
| } |
| |
| public Class getGetterClass() |
| { |
| return getterClass; |
| } |
| |
| public Class getSetterClass() |
| { |
| return null; |
| } |
| |
| public String getLastExpression() |
| { |
| return lastExpression; |
| } |
| |
| public String getCoreExpression() |
| { |
| return coreExpression; |
| } |
| |
| public String toSetSourceString( OgnlContext context, Object target ) |
| { |
| return ""; |
| } |
| |
| public String toGetSourceString( OgnlContext context, Object target ) |
| { |
| String result = ""; |
| |
| NodeType lastType = null; |
| |
| for ( int i = 0; i < children.length; ++i ) |
| { |
| // System.out.println("astsequence child : " + _children[i].getClass().getName()); |
| String seqValue = children[i].toGetSourceString( context, target ); |
| |
| if ( ( i + 1 ) < children.length && ASTOr.class.isInstance( children[i] ) ) |
| { |
| seqValue = "(" + seqValue + ")"; |
| } |
| |
| if ( i > 0 && ASTProperty.class.isInstance( children[i] ) && seqValue != null |
| && !seqValue.trim().isEmpty() ) |
| { |
| String pre = (String) context.get( "_currentChain" ); |
| if ( pre == null ) |
| { |
| pre = ""; |
| } |
| |
| seqValue = |
| ExpressionCompiler.getRootExpression( children[i], context.getRoot(), context ) + pre + seqValue; |
| context.setCurrentAccessor( context.getRoot().getClass() ); |
| } |
| |
| if ( ( i + 1 ) >= children.length ) |
| { |
| coreExpression = result; |
| lastExpression = seqValue; |
| } |
| |
| if ( seqValue != null && !seqValue.trim().isEmpty() && ( i + 1 ) < children.length ) |
| { |
| result += seqValue + ";"; |
| } |
| else if ( seqValue != null && !seqValue.trim().isEmpty() ) |
| { |
| result += seqValue; |
| } |
| // set last known type from last child with a type |
| |
| if ( NodeType.class.isInstance( children[i] ) && ( (NodeType) children[i] ).getGetterClass() != null ) |
| { |
| lastType = (NodeType) children[i]; |
| } |
| } |
| |
| if ( lastType != null ) |
| { |
| getterClass = lastType.getGetterClass(); |
| } |
| |
| return result; |
| } |
| |
| public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data ) |
| throws OgnlException |
| { |
| return visitor.visit( this, data ); |
| } |
| } |