output writer. This made the creation of a html result writer necessary which is included in this commit. The yacydoc servlet was used to present all metadata to a document, but the solr interface can serve for this purpose in a much better way. All usages (instead one) of yacydoc were replaced by a solr call. This affects also the 'metadata' link attached to search results.pull/1/head
orbiter
12 years ago
parent
200769d0c6
commit
2b320313d9
@ -0,0 +1,190 @@
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/**
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* HTMLResponseWriter
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* Copyright 2013 by Michael Peter Christen
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* First released 09.06.2013 at http://yacy.net
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.yacy.cora.federate.solr.responsewriter;
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import java.io.IOException;
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import java.io.Writer;
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import java.util.Date;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.regex.Pattern;
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import net.yacy.cora.federate.solr.SolrType;
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import net.yacy.search.schema.CollectionSchema;
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import org.apache.lucene.document.Document;
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import org.apache.lucene.index.IndexableField;
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import org.apache.solr.common.params.SolrParams;
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import org.apache.solr.common.util.NamedList;
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import org.apache.solr.common.util.XML;
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import org.apache.solr.request.SolrQueryRequest;
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import org.apache.solr.response.QueryResponseWriter;
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import org.apache.solr.response.ResultContext;
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import org.apache.solr.response.SolrQueryResponse;
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import org.apache.solr.schema.FieldType;
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import org.apache.solr.schema.IndexSchema;
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import org.apache.solr.schema.SchemaField;
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import org.apache.solr.schema.TextField;
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import org.apache.solr.search.DocIterator;
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import org.apache.solr.search.DocList;
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import org.apache.solr.search.SolrIndexSearcher;
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public class HTMLResponseWriter implements QueryResponseWriter {
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private static final Set<String> DEFAULT_FIELD_LIST = null;
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private static final Pattern dqp = Pattern.compile("\"");
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public HTMLResponseWriter() {
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super();
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}
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@Override
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public String getContentType(final SolrQueryRequest request, final SolrQueryResponse response) {
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return CONTENT_TYPE_XML_UTF8;
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}
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@Override
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public void init(@SuppressWarnings("rawtypes") NamedList n) {
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}
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@Override
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public void write(final Writer writer, final SolrQueryRequest request, final SolrQueryResponse rsp) throws IOException {
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NamedList<?> values = rsp.getValues();
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assert values.get("responseHeader") != null;
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assert values.get("response") != null;
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writer.write("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n");
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//writer.write("<!--\n");
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//writer.write("this is a XHTML+RDFa file. It contains RDF annotations with dublin core properties\n");
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//writer.write("you can validate it with http://validator.w3.org/\n");
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//writer.write("-->\n");
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writer.write("<html xmlns=\"http://www.w3.org/1999/xhtml\"\n");
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writer.write(" xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\n");
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writer.write(" xmlns:dc=\"http://purl.org/dc/elements/1.1/\"\n");
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writer.write(" xmlns:foaf=\"http://xmlns.com/foaf/0.1/\">\n");
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writer.write("<head profile=\"http://www.w3.org/2003/g/data-view\">\n");
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//writer.write("<link rel=\"transformation\" href=\"http://www-sop.inria.fr/acacia/soft/RDFa2RDFXML.xsl\"/>\n");
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writer.write("<link rel=\"stylesheet\" type=\"text/css\" media=\"all\" href=\"/env/base.css\" />\n");
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writer.write("<link rel=\"stylesheet\" type=\"text/css\" media=\"screen\" href=\"/env/style.css\" />\n");
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NamedList<Object> paramsList = request.getOriginalParams().toNamedList();
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paramsList.remove("wt");
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String xmlquery = dqp.matcher("/solr/select?" + SolrParams.toSolrParams(paramsList).toString()).replaceAll("%22");
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writer.write("<div id=\"api\"><a href=\"" + xmlquery + "\"><img src=\"../env/grafics/api.png\" width=\"60\" height=\"40\" alt=\"API\" /></a>\n");
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writer.write("<span>This search result can also be retrieved as XML. Click the API icon to see an example call to the search rss API.</div>\n");
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DocList response = ((ResultContext) values.get("response")).docs;
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final int sz = response.size();
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if (sz > 0) {
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SolrIndexSearcher searcher = request.getSearcher();
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DocIterator iterator = response.iterator();
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IndexSchema schema = request.getSchema();
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if (sz == 1) {
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int id = iterator.nextDoc();
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Document doc = searcher.doc(id, DEFAULT_FIELD_LIST);
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LinkedHashMap<String, String> tdoc = translateDoc(schema, doc);
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String title = tdoc.get(CollectionSchema.title.getSolrFieldName());
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writer.write("<title>" + title + "</title>\n</head><body>\n");
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writeDoc(writer, tdoc, title);
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} else {
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writer.write("<title>Document List</title>\n</head><body>\n");
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for (int i = 0; i < sz; i++) {
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int id = iterator.nextDoc();
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Document doc = searcher.doc(id, DEFAULT_FIELD_LIST);
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LinkedHashMap<String, String> tdoc = translateDoc(schema, doc);
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String title = tdoc.get(CollectionSchema.title.getSolrFieldName());
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writeDoc(writer, tdoc, title);
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}
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}
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} else {
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writer.write("<title>No Document Found</title>\n</head><body>\n");
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}
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writer.write("</body></html>\n");
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}
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private static final void writeDoc(Writer writer, LinkedHashMap<String, String> tdoc, String title) throws IOException {
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writer.write("<form name=\"yacydoc" + title + "\" method=\"post\" action=\"#\" enctype=\"multipart/form-data\" accept-charset=\"UTF-8\">\n");
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writer.write("<fieldset>\n");
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writer.write("<h1 property=\"dc:Title\">" + title + "</h1>\n");
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writer.write("<dl>\n");
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for (Map.Entry<String, String> entry: tdoc.entrySet()) {
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writer.write("<dt>");
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writer.write(entry.getKey());
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writer.write("</dt><dd>");
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XML.escapeAttributeValue(entry.getValue(), writer);
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writer.write("</dd>\n");
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}
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writer.write("</dl>\n");
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writer.write("</fieldset>\n");
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writer.write("</form>\n");
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}
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private static final LinkedHashMap<String, String> translateDoc(final IndexSchema schema, final Document doc) {
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List<IndexableField> fields = doc.getFields();
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int sz = fields.size();
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int fidx1 = 0, fidx2 = 0;
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LinkedHashMap<String, String> kv = new LinkedHashMap<String, String>();
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while (fidx1 < sz) {
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IndexableField value = fields.get(fidx1);
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String fieldName = value.name();
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fidx2 = fidx1 + 1;
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while (fidx2 < sz && fieldName.equals(fields.get(fidx2).name())) {
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fidx2++;
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}
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SchemaField sf = schema.getFieldOrNull(fieldName);
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if (sf == null) sf = new SchemaField(fieldName, new TextField());
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FieldType type = sf.getType();
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if (fidx1 + 1 == fidx2) {
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if (sf.multiValued()) {
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String sv = value.stringValue();
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kv.put(fieldName, field2string(type, sv));
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} else {
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kv.put(fieldName, field2string(type, value.stringValue()));
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}
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} else {
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for (int i = fidx1; i < fidx2; i++) {
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String sv = fields.get(i).stringValue();
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kv.put(fieldName + "_" + i, field2string(type, sv));
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}
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}
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fidx1 = fidx2;
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}
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return kv;
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}
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@SuppressWarnings("deprecation")
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private static String field2string(final FieldType type, final String value) {
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String typeName = type.getTypeName();
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if (typeName.equals(SolrType.bool.printName())) {
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return "F".equals(value) ? "false" : "true";
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} else if (typeName.equals(SolrType.date.printName())) {
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return org.apache.solr.schema.DateField.formatExternal(new Date(Long.parseLong(value))); // this is declared deprecated in solr 4.2.1 but is still used as done here
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}
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return value;
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}
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// XML.escapeCharData(val, writer);
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}
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Reference in new issue