| package org.apache.directmemory.server.commons; |
| |
| /* |
| * 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.codehaus.jackson.JsonFactory; |
| import org.codehaus.jackson.JsonParseException; |
| import org.codehaus.jackson.JsonParser; |
| import org.codehaus.jackson.JsonToken; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * @author Olivier Lamy |
| */ |
| public class DirectMemoryParser |
| { |
| |
| private JsonFactory jsonFactory; |
| |
| private static DirectMemoryParser INSTANCE = new DirectMemoryParser(); |
| |
| |
| private DirectMemoryParser() |
| { |
| this.jsonFactory = new JsonFactory(); |
| } |
| |
| public static DirectMemoryParser instance() |
| { |
| return INSTANCE; |
| } |
| |
| public DirectMemoryRequest buildRequest( InputStream inputStream ) |
| throws DirectMemoryException |
| { |
| try |
| { |
| JsonParser jp = this.jsonFactory.createJsonParser( inputStream ); |
| DirectMemoryRequest rq = new DirectMemoryRequest(); |
| JsonToken jsonToken = jp.nextToken(); |
| while ( jsonToken != JsonToken.END_OBJECT && jsonToken != null ) |
| { |
| String fieldName = jp.getCurrentName(); |
| if ( DirectMemoryConstants.KEY_FIELD_NAME.equals( fieldName ) ) |
| { |
| rq.setKey( jp.getText() ); |
| } |
| if ( DirectMemoryConstants.PUT_FIELD_NAME.equals( fieldName ) ) |
| { |
| rq.setUpdate( jp.getValueAsBoolean() ); |
| } |
| if ( DirectMemoryConstants.EXPIRES_IN_FIELD_NAME.equals( fieldName ) ) |
| { |
| rq.setExpiresIn( jp.getValueAsInt() ); |
| } |
| if ( DirectMemoryConstants.CACHE_CONTENT_FIELD_NAME.equals( fieldName ) ) |
| { |
| // binaryValue need to go to nextToken |
| jp.nextToken(); |
| rq.setCacheContent( jp.getBinaryValue() ); |
| } |
| jsonToken = jp.nextToken(); |
| } |
| |
| jp.close(); |
| |
| return rq; |
| } |
| catch ( JsonParseException e ) |
| { |
| throw new DirectMemoryException( e.getMessage(), e ); |
| |
| } |
| catch ( IOException e ) |
| { |
| throw new DirectMemoryException( e.getMessage(), e ); |
| } |
| } |
| |
| public DirectMemoryResponse buildResponse( InputStream inputStream ) |
| throws DirectMemoryException |
| { |
| try |
| { |
| JsonParser jp = this.jsonFactory.createJsonParser( inputStream ); |
| DirectMemoryResponse rs = new DirectMemoryResponse(); |
| |
| JsonToken jsonToken = jp.nextToken(); |
| |
| while ( jsonToken != JsonToken.END_OBJECT && jsonToken != null) |
| { |
| String fieldName = jp.getCurrentName(); |
| if ( DirectMemoryConstants.FOUND_FIELD_NAME.equals( fieldName ) ) |
| { |
| rs.setFound( jp.getValueAsBoolean() ); |
| } |
| if ( DirectMemoryConstants.KEY_FIELD_NAME.equals( fieldName ) ) |
| { |
| rs.setKey( jp.getText() ); |
| } |
| if ( DirectMemoryConstants.CACHE_CONTENT_FIELD_NAME.equals( fieldName ) ) |
| { |
| // binaryValue need to go to nextToken |
| jp.nextToken(); |
| rs.setCacheContent( jp.getBinaryValue() ); |
| } |
| jsonToken = jp.nextToken(); |
| } |
| |
| |
| return rs; |
| } |
| catch ( JsonParseException e ) |
| { |
| throw new DirectMemoryException( e.getMessage(), e ); |
| |
| } |
| catch ( IOException e ) |
| { |
| throw new DirectMemoryException( e.getMessage(), e ); |
| } |
| } |
| |
| } |