Java tutorial
/******************************************************************************* * Gisgraphy Project * * This library 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 library 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 library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA * * Copyright 2008 Gisgraphy project * David Masclet <davidmasclet@gisgraphy.com> * * *******************************************************************************/ package com.gisgraphy.webapp.action; import java.util.List; import org.apache.commons.lang.StringUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Required; import com.gisgraphy.domain.geoloc.entity.GisFeature; import com.gisgraphy.domain.repository.GisFeatureDao; import com.gisgraphy.domain.repository.IGisFeatureDao; import com.gisgraphy.domain.valueobject.Output; import com.gisgraphy.domain.valueobject.Output.OutputStyle; import com.gisgraphy.fulltext.FullTextFields; import com.gisgraphy.fulltext.FulltextQuery; import com.gisgraphy.fulltext.FulltextResultsDto; import com.gisgraphy.fulltext.IFullTextSearchEngine; import com.gisgraphy.fulltext.SolrResponseDto; import com.opensymphony.xwork2.ActionSupport; /** * DisplayFeature Action * * @author <a href="mailto:david.masclet@gisgraphy.com">David Masclet</a> */ public class DisplayFeatureAction extends ActionSupport { /** * The reference in the localized file for the error for the fact featureId * is required */ public static final String ERROR_REF_REQUIRED_FEATURE_ID = "required.featureId"; /** * The reference in the localized file for the error for the fact that the * specified featureId is not a numeric value */ public static final String ERROR_REF_NON_NUMERIC_FEATUREID = "displayfeature.featureid.numeric"; /** * The reference in the localized file for the error for the fact that more * than one features were founds for the specified featureId */ public static final String ERROR_REF_NON_UNIQUE_RESULT = "result.nouniqueresult"; /** * The reference in the localized file for the error for the fact that no * gid were found for the specified featureId */ public static final String ERROR_REF_NORESULT = "result.feature.noresult"; /** * The reference in the localized file for general error */ static final String ERROR_REF_GENERAL_ERROR = "display.error"; /** * Default Generated serial Id */ private static final long serialVersionUID = 2940477008022016677L; private static final Output FULL_OUTPUT = Output.withDefaultFormat() .withLanguageCode(Output.DEFAULT_LANGUAGE_CODE).withStyle(OutputStyle.FULL); private static Logger logger = LoggerFactory.getLogger(DisplayFeatureAction.class); private IFullTextSearchEngine fullTextSearchEngine; private IGisFeatureDao gisFeatureDao; private String featureId; private SolrResponseDto result = null; private String shape = null; public static final String ERROR = "error"; /** * @return the fullyqualified name if exists, or the name */ public String getPreferedName() { if (result == null) { return ""; } else { String fully_qualified_name = result.getFully_qualified_name(); return !StringUtils.isEmpty(fully_qualified_name) ? fully_qualified_name : result.getName(); } } private boolean isNumeric(String number) { try { Integer.parseInt(number); return true; } catch (NumberFormatException e) { return false; } } /** * The error message reference in the localized properties file */ private String errorRef = ""; private String errorMessage = ""; /* * (non-Javadoc) * * @see com.opensymphony.xwork2.ActionSupport#execute() */ @Override public String execute() throws Exception { try { if (StringUtils.isEmpty(featureId)) { errorRef = ERROR_REF_REQUIRED_FEATURE_ID; return ERROR; } if (!isNumeric(featureId)) { errorRef = ERROR_REF_NON_NUMERIC_FEATUREID; return ERROR; } FulltextQuery fulltextQuery = (FulltextQuery) new FulltextQuery( FullTextFields.FEATUREID.getValue() + ":" + featureId).withOutput(FULL_OUTPUT); FulltextResultsDto responseDTO = fullTextSearchEngine.executeQuery(fulltextQuery); List<SolrResponseDto> results = responseDTO.getResults(); int resultSize = results.size(); if (resultSize == 0) { errorRef = ERROR_REF_NORESULT; return ERROR; } else if (resultSize > 1) { errorRef = ERROR_REF_NON_UNIQUE_RESULT; return ERROR; } else { result = results.get(0); this.shape = retrieveShape(result.getFeature_id()); } } catch (RuntimeException e) { if (e.getCause() != null) { logger.warn("An error occured during search : " + e.getCause().getMessage()); } else { logger.warn("An error occured during search : " + e.getMessage()); } this.errorRef = ERROR_REF_GENERAL_ERROR; this.errorMessage = e.getMessage(); return ERROR; } return SUCCESS; } protected String retrieveShape(Long featureId) { if (featureId != null) { return gisFeatureDao.getShapeAsWKTByFeatureId(featureId); } return null; } /** * @param fullTextSearchEngine * the fullTextSearchEngine to set */ @Required public void setFullTextSearchEngine(IFullTextSearchEngine fullTextSearchEngine) { this.fullTextSearchEngine = fullTextSearchEngine; } @Required public void setGisFeatureDao(IGisFeatureDao gisFeatureDao) { this.gisFeatureDao = gisFeatureDao; } /** * @param featureId * the featureId to set */ public void setFeatureId(String featureId) { this.featureId = featureId; } /** * @return the errorRef */ public String getErrorRef() { return errorRef; } /** * @return the result */ public SolrResponseDto getResult() { return result; } /** * @return the errorMessage */ public String getErrorMessage() { return errorMessage; } public String getShape() { return shape; } }