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204 lines
8.4 KiB
204 lines
8.4 KiB
// Table_p.java
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// -----------------------
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// (C) 2010 by Michael Peter Christen; mc@yacy.net
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// first published 21.01.2010 in Frankfurt, Germany on http://yacy.net
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.htroot.api;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.regex.Pattern;
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import net.yacy.cora.document.encoding.UTF8;
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import net.yacy.cora.protocol.HeaderFramework;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.cora.util.CommonPattern;
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import net.yacy.cora.util.ConcurrentLog;
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import net.yacy.cora.util.SpaceExceededException;
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import net.yacy.kelondro.blob.Tables;
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import net.yacy.search.Switchboard;
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import net.yacy.server.serverObjects;
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import net.yacy.server.serverSwitch;
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public class table_p {
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
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final Switchboard sb = (Switchboard) env;
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final serverObjects prop = new serverObjects();
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final String EXT = header.get(HeaderFramework.CONNECTION_PROP_EXT, "");
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final boolean html = EXT.equals("html");
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final boolean xml = EXT.equals("xml");
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String table = (post == null) ? null : post.get("table");
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if (post == null || (!post.containsKey("commitrow") && table != null && !sb.tables.hasHeap(table))) table = null;
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prop.put("showtable", 0);
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prop.put("tablecount", sb.tables.size());
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// apply deletion requests
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if (table != null && post != null && post.containsKey("deletetable")) {
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sb.tables.clear(table);
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table = null;
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}
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if (table == null) {
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// list all tables that we know
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int c = 0;
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for (final String name: sb.tables) {
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try {
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if (html) {
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prop.putHTML("showtable_tables_" + c + "_table", name);
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}
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if (xml) {
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prop.putXML("showtable_tables_" + c + "_table", name);
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}
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prop.put("showtable_tables_" + c + "_num", sb.tables.size(name));
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c++;
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} catch (final IOException e) {
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}
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}
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prop.put("showtable_tables", c);
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prop.put("tablecount", c);
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return prop;
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}
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final boolean showpk = post.containsKey("pk");
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final String selectKey = post.containsKey("selectKey") ? post.get("selectKey") : null;
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final String selectValue = (selectKey != null && post.containsKey("selectValue")) ? post.get("selectValue") : null;
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final String counts = post.get("count", null);
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int maxcount = (counts == null || counts.equals("all")) ? Integer.MAX_VALUE : post.getInt("count", 10);
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final String pattern = post.get("search", "");
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final Pattern matcher = (pattern.isEmpty() || pattern.equals(".*")) ? null : Pattern.compile(".*" + pattern + ".*");
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if (post.containsKey("deleterows")) {
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for (final Map.Entry<String, String> entry: post.entrySet()) {
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if (entry.getValue().startsWith("pk_")) try {
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sb.tables.delete(table, entry.getValue().substring(3).getBytes());
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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}
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}
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}
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if (post.containsKey("commitrow")) {
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final String pk = post.get("pk");
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final Map<String, byte[]> map = new HashMap<String, byte[]>();
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for (final Map.Entry<String, String> entry: post.entrySet()) {
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if (entry.getKey().startsWith("col_")) {
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map.put(entry.getKey().substring(4), entry.getValue().getBytes());
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}
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}
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try {
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if (pk == null || pk.isEmpty()) {
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sb.tables.insert(table, map);
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} else {
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sb.tables.update(table, pk.getBytes(), map);
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}
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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} catch (final SpaceExceededException e) {
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ConcurrentLog.logException(e);
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}
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}
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// generate table
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prop.put("showtable", 1);
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prop.put("showtable_table", table);
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// insert the columns
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ArrayList<String> columns = null;
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try {
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columns = sb.tables.columns(table);
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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columns = new ArrayList<String>();
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}
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// if a row attribute is given
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// then order the columns according to the given order
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final String[] row = CommonPattern.COMMA.split(post.get("row", ""));
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for (int i = 0; i < row.length; i++) {
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if (columns.contains(row[i])) {
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columns.remove(row[i]);
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if (i < columns.size()) columns.add(i, row[i]);
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}
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}
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prop.put("showtable_showpk", showpk ? 1 : 0);
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for (int i = 0; i < columns.size(); i++) {
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prop.putHTML("showtable_columns_" + i + "_header", columns.get(i));
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}
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prop.put("showtable_columns", columns.size());
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// insert all rows
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try {
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maxcount = Math.min(maxcount, sb.tables.size(table));
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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maxcount = 0;
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}
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int count = 0;
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try {
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final Iterator<Tables.Row> mapIterator = sb.tables.iterator(table, matcher, true);
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Tables.Row trow;
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boolean dark = true;
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String cellName, cellValue;
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rowloop: while ((mapIterator.hasNext()) && (count < maxcount)) {
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trow = mapIterator.next();
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if (row == null) continue;
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prop.put("showtable_list_" + count + "_dark", ((dark) ? 1 : 0) ); dark=!dark;
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prop.put("showtable_list_" + count + "_showpk", showpk ? 1 : 0);
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prop.put("showtable_list_" + count + "_showpk_pk", UTF8.String(trow.getPK()));
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prop.put("showtable_list_" + count + "_count", count);
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for (int i = 0; i < columns.size(); i++) {
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cellName = columns.get(i);
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if (trow.containsKey(cellName)) {
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cellValue = UTF8.String(trow.get(cellName));
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if (selectKey != null && cellName.equals(selectKey) && !cellValue.matches(selectValue)) continue rowloop;
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} else {
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cellValue = "";
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}
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if (html) {
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prop.putHTML("showtable_list_" + count + "_columns_" + i + "_column", cellName);
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prop.putHTML("showtable_list_" + count + "_columns_" + i + "_cell", cellValue);
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}
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if (xml) {
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prop.putXML("showtable_list_" + count + "_columns_" + i + "_column", cellName);
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prop.putXML("showtable_list_" + count + "_columns_" + i + "_cell", cellValue);
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}
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}
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prop.put("showtable_list_" + count + "_columns", columns.size());
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count++;
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}
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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}
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prop.put("showtable_list", count);
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prop.put("showtable_num", count);
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// return rewrite properties
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return prop;
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}
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}
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