Java tutorial
/* See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * Esri Inc. 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. */ package com.esri.gpt.catalog.arcgis.agportal.publication; import java.io.IOException; import java.util.List; import org.apache.lucene.document.Document; import org.apache.lucene.document.Fieldable; import org.apache.lucene.document.MapFieldSelector; import org.apache.lucene.index.CorruptIndexException; import org.apache.lucene.index.IndexReader; import org.apache.lucene.index.Term; import org.apache.lucene.index.TermDocs; import org.apache.lucene.search.IndexSearcher; import com.esri.gpt.catalog.arcgis.agportal.itemInfo.ESRI_ItemInformation; import com.esri.gpt.catalog.lucene.LuceneIndexAdapter; import com.esri.gpt.catalog.lucene.Storeables; import com.esri.gpt.framework.context.RequestContext; import com.esri.gpt.framework.geometry.Envelope; import com.esri.gpt.framework.util.Val; import java.util.Arrays; /** * Builds ESRI_ItemInformation by querying Lucene index. * NOTE! This is EXPERIMENTAL feature. It might be removed at any time in the future. */ public class ItemInfoLuceneAdapter { /** * instance variables ====================================================== */ private LuceneIndexAdapter baseAdapter; private IndexSearcher searcher; /** * constructors ============================================================ */ /** Default constructor */ public ItemInfoLuceneAdapter() { } /** * methods ================================================================= */ /** * Closes any open resources. */ public void close() { if ((this.baseAdapter != null) && (this.searcher != null)) { this.baseAdapter.closeSearcher(this.searcher); } } /** * Gets the index srch. * * @param context * the operation context * @return the index srch * @throws CorruptIndexException * if the index is corrupt * @throws IOException * if an I/O exception occurs */ private IndexSearcher getSearcher(RequestContext context) throws CorruptIndexException, IOException { if (this.searcher != null) { return this.searcher; } else { if (this.baseAdapter == null) { this.baseAdapter = new LuceneIndexAdapter(context); } this.searcher = this.baseAdapter.newSearcher(); return this.searcher; } } /** * Returns the field values associated with a document * * @param context * the operation context * @param fields * array of fields to fetch * @param uuid * the document uuid * @return the field values (null if not found) * @throws CorruptIndexException * if the index is corrupt * @throws IOException * if an I/O exception occurs */ public ESRI_ItemInformation makeItemInfoByUuid(RequestContext context, String[] fields, String uuid) throws CorruptIndexException, IOException { TermDocs termDocs = null; IndexReader reader = null; MapFieldSelector selector = null; try { uuid = Val.chkStr(uuid); if (uuid.length() > 0) { IndexSearcher srch = this.getSearcher(context); reader = srch.getIndexReader(); if (fields != null) { selector = new MapFieldSelector(fields); } termDocs = reader.termDocs(); termDocs.seek(new Term(Storeables.FIELD_UUID, uuid)); if (termDocs.next()) { Document document = reader.document(termDocs.doc(), selector); List<Fieldable> flds = document.getFields(); ESRI_ItemInformation itemInfo = new ESRI_ItemInformation(); itemInfo.setType("Map Service"); itemInfo.setTags(Arrays.asList(new String[] { "ArcGIS", "Server map", "service" })); Envelope extent = new Envelope(); for (Fieldable fld : flds) { String fieldName = fld.name(); String[] vals = document.getValues(fieldName); if (fieldName.contains("uuid")) { itemInfo.setId(vals[0].replaceAll("^\\{|\\}$|\\-", "")); } else if (fieldName.contains("title")) { itemInfo.setTitle(vals[0]); itemInfo.setName(vals[0]); } else if (fieldName.contains("resource.url")) { itemInfo.setUrl(vals[0]); String type = Val.chkStr(guessServiceTypeFromUrl(vals[0])); if (type.length() > 0) { itemInfo.setType(type); } } else if (fieldName.contains("contentType")) { } else if (fieldName.contains("keywords")) { itemInfo.setTypeKeywords(Arrays.asList(vals)); itemInfo.setTags(Arrays.asList(vals)); } else if (fieldName.contains("dataTheme")) { itemInfo.setTags(Arrays.asList(vals)); } else if (fieldName.contains("abstract")) { itemInfo.setDescription(vals[0]); // } else if (fieldName.contains("xml")) { // itemInfo.setXml(vals[0]); } else if (fieldName.contains("minx")) { extent.setMinX(vals[0]); } else if (fieldName.contains("miny")) { extent.setMinY(vals[0]); } else if (fieldName.contains("maxx")) { extent.setMaxX(vals[0]); } else if (fieldName.contains("maxy")) { extent.setMaxY(vals[0]); } else if (fieldName.contains("thumbnail.url")) { itemInfo.setThumbnailUrl(vals[0]); } } itemInfo.setExtent(extent); return itemInfo; } } } finally { try { if (termDocs != null) termDocs.close(); if (reader != null) reader.close(); } catch (Exception ef) { } } return null; } /** * Guesses a service type from a URL. * * @param url * the url * @return the service type */ private String guessServiceTypeFromUrl(String url) { String serviceType = ""; String[] types = { "mapserver", "imageserver", "globeserver", "featureserver", "gpserver", "geocodeserver", "geometryserver", "networkserver", "geodataserver" }; url = Val.chkStr(url).toLowerCase(); if (url.contains("arcgis/rest") || url.contains("arcgis/services") || url.contains("rest/services")) { serviceType = "ags"; if (url.contains(types[0])) { serviceType = "Map Service"; } else if (url.contains(types[1])) { serviceType = "Image Service"; } else if (url.contains(types[2])) { serviceType = "Globe Service"; } else if (url.contains(types[3])) { serviceType = "Feature Service"; } else { serviceType = "Map Service"; } } else if (url.contains("wmsserver")) { serviceType = "Web Map"; } else if (url.endsWith(".nmf")) { serviceType = "Explorer Document"; } else if (url.endsWith(".lyr")) { serviceType = "Layer File"; } else if (url.endsWith(".mxd")) { serviceType = "ArcMap Document"; } else if (url.endsWith(".lpk")) { serviceType = "Layer Package"; } else if (url.endsWith(".ncgf")) { serviceType = "Explorer Application Configuration"; } else if (url.endsWith(".mpk")) { serviceType = "Map Package"; } else if (url.endsWith(".wmpk")) { serviceType = "Mobile Package"; } else if (url.endsWith(".zip")) { serviceType = "Map template"; } else if (url.endsWith(".esriaddin")) { serviceType = "Desktop Add In"; } else if (url.endsWith(".eaz")) { serviceType = "Explorer Add In"; } return serviceType; } }