001// Copyright 2008, 2010 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry5.internal.services; 016 017import java.io.IOException; 018import java.io.PrintWriter; 019 020import org.apache.tapestry5.ContentType; 021import org.apache.tapestry5.SymbolConstants; 022import org.apache.tapestry5.internal.InternalConstants; 023import org.apache.tapestry5.ioc.annotations.Symbol; 024import org.apache.tapestry5.json.JSONArray; 025import org.apache.tapestry5.services.ComponentEventResultProcessor; 026import org.apache.tapestry5.services.Response; 027 028public class JSONArrayEventResultProcessor implements ComponentEventResultProcessor<JSONArray> 029{ 030 private final Response response; 031 032 private final String outputEncoding; 033 034 private final boolean compactJSON; 035 036 public JSONArrayEventResultProcessor(Response response, 037 038 @Symbol(SymbolConstants.CHARSET) 039 String outputEncoding, 040 041 @Symbol(SymbolConstants.COMPACT_JSON) 042 boolean compactJSON) 043 { 044 this.response = response; 045 this.outputEncoding = outputEncoding; 046 this.compactJSON = compactJSON; 047 } 048 049 public void processResultValue(JSONArray value) throws IOException 050 { 051 ContentType contentType = new ContentType(InternalConstants.JSON_MIME_TYPE, outputEncoding); 052 053 PrintWriter pw = response.getPrintWriter(contentType.toString()); 054 055 value.print(pw, compactJSON); 056 057 pw.close(); 058 } 059}