Java tutorial
/** * Copyright (C) 2009-2013 Couchbase, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALING * IN THE SOFTWARE. */ package com.couchbase.client.protocol.views; import java.text.ParseException; import java.util.Collection; import java.util.LinkedList; import java.util.logging.Level; import org.apache.http.HttpRequest; import org.codehaus.jettison.json.JSONArray; import org.codehaus.jettison.json.JSONException; import org.codehaus.jettison.json.JSONObject; /** * Implementation of a view that calls the map * function and excludes the documents in the result. */ public class NoDocsOperationImpl extends ViewOperationImpl { public NoDocsOperationImpl(HttpRequest r, AbstractView view, ViewCallback cb) { super(r, view, cb); } protected ViewResponseNoDocs parseResult(String json) throws ParseException { final Collection<ViewRow> rows = new LinkedList<ViewRow>(); final Collection<RowError> errors = new LinkedList<RowError>(); if (json != null) { try { JSONObject base = new JSONObject(json); if (base.has("rows")) { JSONArray ids = base.getJSONArray("rows"); for (int i = 0; i < ids.length(); i++) { JSONObject elem = ids.getJSONObject(i); String id = elem.getString("id"); String value = elem.getString("value"); if (elem.has("bbox")) { String bbox = elem.getString("bbox"); String geometry = elem.getString("geometry"); rows.add(new SpatialViewRowNoDocs(id, bbox, geometry, value)); } else { String key = elem.getString("key"); rows.add(new ViewRowNoDocs(id, key, value)); } } } if (base.has("debug_info")) { LOGGER.log(Level.INFO, "Debugging View {0}: {1}", new Object[] { getView().getURI(), json }); } if (base.has("errors")) { JSONArray ids = base.getJSONArray("errors"); for (int i = 0; i < ids.length(); i++) { JSONObject elem = ids.getJSONObject(i); String from = elem.getString("from"); String reason = elem.getString("reason"); errors.add(new RowError(from, reason)); } } } catch (JSONException e) { throw new ParseException("Cannot read json: " + json, 0); } } return new ViewResponseNoDocs(rows, errors); } @Override protected void parseError(String json, int errorcode) throws ParseException { String error = null; String reason = null; if (json != null) { try { JSONObject base = new JSONObject(json); if (base.has("error") && base.has("reason")) { error = base.getString("error"); reason = base.getString("reason"); } } catch (JSONException e) { error = "HTTP " + Integer.toString(errorcode); reason = "No extra information given"; } } setException(new ViewException(error, reason)); } }