Project

General

Profile

1
package eu.dnetlib.enabling.database.utils;
2

    
3
import java.io.StringReader;
4
import java.sql.*;
5
import java.sql.Date;
6
import java.text.ParseException;
7
import java.text.SimpleDateFormat;
8
import java.util.*;
9
import java.util.concurrent.ArrayBlockingQueue;
10
import java.util.concurrent.BlockingQueue;
11
import java.util.concurrent.Executors;
12
import java.util.concurrent.TimeUnit;
13
import java.util.concurrent.atomic.AtomicReference;
14
import java.util.regex.Pattern;
15
import javax.sql.DataSource;
16

    
17
import com.google.common.collect.Lists;
18
import com.google.common.collect.Queues;
19
import com.google.common.collect.Sets;
20
import eu.dnetlib.enabling.database.DataSourceFactory;
21
import eu.dnetlib.enabling.database.TransactionTemplateFactory;
22
import eu.dnetlib.enabling.database.objects.DnetDatabase;
23
import eu.dnetlib.enabling.database.rmi.DatabaseException;
24
import eu.dnetlib.miscutils.datetime.DateUtils;
25
import eu.dnetlib.miscutils.functional.string.Sanitizer;
26
import org.apache.commons.lang.BooleanUtils;
27
import org.apache.commons.logging.Log;
28
import org.apache.commons.logging.LogFactory;
29
import org.apache.velocity.app.VelocityEngine;
30
import org.dom4j.Document;
31
import org.dom4j.DocumentHelper;
32
import org.dom4j.Element;
33
import org.dom4j.Node;
34
import org.dom4j.io.SAXReader;
35
import org.joda.time.DateTime;
36
import org.joda.time.format.ISODateTimeFormat;
37
import org.springframework.beans.factory.annotation.Required;
38
import org.springframework.dao.DataAccessException;
39
import org.springframework.jdbc.core.JdbcTemplate;
40
import org.springframework.jdbc.support.rowset.SqlRowSet;
41
import org.springframework.transaction.support.TransactionTemplate;
42
import org.springframework.ui.velocity.VelocityEngineUtils;
43

    
44
public class DatabaseUtils {
45

    
46
	public static final String DNET_RESOURCE_ID_FIELD = "_dnet_resource_identifier_";
47
	public static final int BLOCKING_QUEUE_TIMEOUT = 300;
48
	private static final String SQL_DATE_FORMAT = "yyyy-MM-dd";
49
	private static final Log log = LogFactory.getLog(DatabaseUtils.class); // NOPMD by marko on 11/24/08 5:02 PM
50
	private static final int BLOCKING_QUEUE_SIZE = 200;
51
	private static final Set<String> TRUE_VALUES = Sets.newHashSet("true", "t", "yes", "y", "vero", "v");
52
	private static final Set<String> FALSE_VALUES = Sets.newHashSet("false", "f", "no", "n", "falso");
53
	private DataSourceFactory dataSourceFactory;
54
	private JdbcTemplateFactory jdbcTemplateFactory;
55
	private TransactionTemplateFactory transactionTemplateFactory;
56
	private String defaultDB;
57
	private VelocityEngine velocityEngine;
58
	private String dbPrefix;
59
	private int numbersOfRecordsForTransaction;
60
	private int fetchSize = 100;
61

    
62
	public List<String> listCommonDBTables(final String database) throws DatabaseException {
63
		String query =
64
				"SELECT table_name FROM information_schema.tables " + "WHERE table_schema = 'public' " + "AND table_type != 'VIEW' "
65
						+ "AND table_name NOT LIKE '%_log'";
66
		return getTypedListFromSql(database, query, String.class);
67
	}
68

    
69
	public List<String> listCommonDBViews(final String database) throws DatabaseException {
70
		String query =
71
				"SELECT table_name FROM information_schema.tables " + "WHERE table_schema = 'public' " + "AND table_type = 'VIEW' "
72
						+ "AND table_name NOT LIKE '%_log'";
73
		return getTypedListFromSql(database, query, String.class);
74
	}
75

    
76
	public Map<String, TableDates> getTableDatesForDB(final String db) throws DatabaseException {
77
		Map<String, TableDates> res = new HashMap<String, TableDates>();
78

    
79
		for (String table : listCommonDBTables(db)) {
80
			try {
81
				TableDates dates = new TableDates();
82

    
83
				String query =
84
						"select lastinsert, lastupdate, lastdelete from " + "(select max(date) as lastinsert from " + table
85
								+ "_log where operation='insert') as t1, " + "(select max(date) as lastupdate from " + table
86
								+ "_log where operation='update') as t2, " + "(select max(date) as lastdelete from " + table
87
								+ "_log where operation='delete') as t3";
88

    
89
				SqlRowSet srs = executeSql(db, query, SqlRowSet.class);
90
				if (srs.next()) {
91
					dates.setLastInsert(srs.getDate("lastinsert"));
92
					dates.setLastUpdate(srs.getDate("lastupdate"));
93
					dates.setLastDelete(srs.getDate("lastdelete"));
94
				}
95
				res.put(table, dates);
96
			} catch (Exception e) {
97
				log.warn("Error obtaing dates for table " + table, e);
98
			}
99
		}
100
		return res;
101
	}
102

    
103
	public List<DnetDatabase> listAllDatabases() throws DatabaseException {
104
		final String query =
105
				"SELECT d.datname AS db, COALESCE(dsc.description,'')='isManaged' AS managed FROM pg_database d LEFT OUTER JOIN pg_shdescription dsc ON (d.oid = dsc.objoid) WHERE d.datname LIKE '"
106
						+ dbPrefix + "%' ORDER BY d.datname DESC";
107
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(defaultDB);
108

    
109
		final List<DnetDatabase> list = Lists.newArrayList();
110
		for (Map<String, Object> map : jdbcTemplate.queryForList(query)) {
111
			list.add(new DnetDatabase(map.get("db").toString(), Boolean.parseBoolean(map.get("managed").toString())));
112
		}
113
		return list;
114

    
115
	}
116

    
117
	public <T> List<T> getTypedListFromSql(final String dbName, final String query, final Class<T> clazz) throws DatabaseException {
118
		try {
119
			List<T> list = new ArrayList<T>();
120
			for (Object obj : getJdbcTemplate(dbName).queryForList(query, clazz)) {
121
				list.add(clazz.cast(obj));
122
			}
123
			return list;
124
		} catch (DataAccessException e) {
125
			throw new DatabaseException(e);
126
		}
127
	}
128

    
129
	public List<String> getSimpleListFromSql(final String dbName, final String query) throws DatabaseException {
130

    
131
		JdbcTemplate jdbcTemplate = getJdbcTemplate(dbName);
132

    
133
		try {
134
			List<String> list = new ArrayList<>();
135
			for (Object obj : jdbcTemplate.queryForList(query)) {
136
				list.add(obj.toString());
137
			}
138
			return list;
139
		} catch (DataAccessException e) {
140
			throw new DatabaseException(e);
141
		}
142
	}
143

    
144
	public void executeSql(final String db, final String query) throws DatabaseException {
145
		executeSql(db, query, Void.class);
146
	}
147

    
148
	@SuppressWarnings("unchecked")
149
	public <T> T executeSql(final String dbName, final String query, final Class<T> clazz) throws DatabaseException {
150

    
151
		if (clazz == BlockingQueue.class) {
152
			log.debug("Creating Queue");
153

    
154
			final ArrayBlockingQueue<Document> queue = Queues.newArrayBlockingQueue(BLOCKING_QUEUE_SIZE);
155
			Executors.newSingleThreadExecutor().submit(() -> {
156
				final DataSource ds = dataSourceFactory.createDataSource(dbName);
157
				try (final Connection con = getConnection(ds);
158
						final PreparedStatement stm = getStm(query, con);
159
						final ResultSet rs = stm.executeQuery()) {
160

    
161
					rs.setFetchSize(getFetchSize());
162
					boolean timeout = false;
163
					log.info(String.format("[Thread Id %s] starting to populate queue", Thread.currentThread().getId()));
164
					while (rs.next()) {
165
						ResultSetMetaData md = rs.getMetaData();
166
						Map<String, Object> row = new HashMap<>();
167
						for (int i = 1; i <= md.getColumnCount(); i++) {
168
							row.put(md.getColumnName(i), rs.getObject(i));
169
						}
170
						if (!enqueue(queue, row)) {
171
							timeout = true;
172
							break;
173
						}
174
					}
175
					if (timeout) {
176
						log.warn(String.format("[Thread Id %s] queue full, consumer did not consume for %s seconds, I give up",
177
								Thread.currentThread().getId(), BLOCKING_QUEUE_TIMEOUT));
178
						return;
179
					}
180
					// An empty Map indicates the end of the resultset
181
					enqueue(queue, new HashMap<>());
182
				} catch (SQLException | DatabaseException e) {
183
					throw new RuntimeException(e);
184
				}
185
			});
186

    
187
			log.debug("Returned Queue");
188

    
189
			return (T) queue;
190
		}
191

    
192
		final JdbcTemplate jdbcTemplate = jdbcTemplateFactory.createJdbcTemplate(dbName);
193
		if (clazz == Integer.class) return (T) jdbcTemplate.queryForObject(query, Integer.class);
194
		else if (clazz == List.class) return (T) jdbcTemplate.queryForList(query);
195
		else if (clazz == Map.class) return (T) jdbcTemplate.queryForMap(query);
196
		else if (clazz == SqlRowSet.class) return (T) jdbcTemplate.queryForRowSet(query);
197
		else {
198
			jdbcTemplate.update(query);
199
			return null;
200
		}
201
	}
202

    
203
	private boolean enqueue(final ArrayBlockingQueue<Document> q, final Map<String, Object> row) throws DatabaseException {
204
		try {
205
			return q.offer(rowToDocument(row), BLOCKING_QUEUE_TIMEOUT, TimeUnit.SECONDS);
206
		} catch (InterruptedException e) {
207
			log.error("Error putting element in queue");
208
			throw new RuntimeException(e);
209
		}
210
	}
211

    
212
	private PreparedStatement getStm(final String query, final Connection con) throws SQLException {
213
		final PreparedStatement stm = con.prepareStatement(query, ResultSet.TYPE_FORWARD_ONLY);
214
		stm.setFetchSize(getFetchSize());
215
		return stm;
216
	}
217

    
218
	private Connection getConnection(final DataSource dataSource) throws SQLException {
219
		final Connection conn = dataSource.getConnection();
220
		conn.setAutoCommit(false);
221
		return conn;
222
	}
223

    
224
	public boolean contains(final String db, final String table, final String column, final String value) throws DatabaseException {
225
		String query = "";
226
		try {
227
			verifyParameters(db, table, column);
228
			query = "SELECT " + column + " FROM " + table + " WHERE " + column + " = '" + value + "'";
229
			List<String> res = getSimpleListFromSql(db, query);
230
			return res != null && res.size() > 0;
231
		} catch (Throwable e) {
232
			throw new DatabaseException("Error performing SQL: " + query, e);
233
		}
234
	}
235

    
236
	public List<Map<?, ?>> describeTable(final String database, final String table) throws DatabaseException {
237
		verifyParameters(database, table);
238

    
239
		try {
240
			final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
241
			List<Map<?, ?>> response = new ArrayList<Map<?, ?>>();
242
			String query = "SELECT * FROM information_schema.columns WHERE table_name = ?";
243

    
244
			for (Object o : jdbcTemplate.queryForList(query, new Object[] { table })) {
245
				if (o instanceof Map<?, ?>) {
246
					response.add((Map<?, ?>) o);
247
				}
248
			}
249
			return response;
250
		} catch (DataAccessException e) {
251
			throw new DatabaseException(e);
252
		}
253
	}
254

    
255
	public String dumpTableAsXML(final String db, final String t) throws DatabaseException {
256
		return dumpTableAsDoc(db, t).asXML();
257
	}
258

    
259
	public Document dumpTableAsDoc(final String db, final String t) throws DatabaseException {
260
		Document doc = DocumentHelper.createDocument();
261

    
262
		Element root = doc.addElement("DB_TABLE");
263
		Element head = root.addElement("HEADER");
264

    
265
		head.addElement("DATABASE").addAttribute("value", db);
266
		head.addElement("TABLE").addAttribute("value", t);
267
		head.addElement("DATE").addAttribute("value", DateUtils.now_ISO8601());
268

    
269
		Element body = root.addElement("BODY");
270
		for (Document d : dumpTableAsList(db, t)) {
271
			body.add(d.getRootElement());
272
		}
273
		return doc;
274
	}
275

    
276
	public List<Document> dumpTableAsList(final String db, final String t) throws DatabaseException {
277
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(db);
278

    
279
		List<Document> list = new ArrayList<Document>();
280
		for (Object o : jdbcTemplate.queryForList("SELECT * FROM " + t)) {
281
			if (o instanceof Map<?, ?>) {
282
				list.add(rowToDocument((Map<?, ?>) o));
283
			}
284
		}
285
		return list;
286
	}
287

    
288
	public Document rowToDocument(final Map<?, ?> map) throws DatabaseException {
289
		final Document doc = DocumentHelper.createDocument();
290
		final Element row = doc.addElement("ROW");
291

    
292
		for (Map.Entry<?, ?> entry : map.entrySet()) {
293
			Element col = row.addElement("FIELD");
294
			col.addAttribute("name", "" + entry.getKey());
295
			addValue(col, entry.getValue());
296
		}
297
		return doc;
298
	}
299

    
300
	public Document getRowByResourceId(final String database, final String table, final String resourceId) throws DatabaseException {
301
		verifyParameters(database, table);
302

    
303
		JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
304
		String query = "SELECT * FROM " + table + " WHERE " + DNET_RESOURCE_ID_FIELD + "=?";
305

    
306
		Map<?, ?> map = jdbcTemplate.queryForMap(query, resourceId);
307
		Document doc = DocumentHelper.createDocument();
308

    
309
		Element root = doc.addElement("DB_RECORD");
310
		Element head = root.addElement("HEADER");
311
		head.addElement("RESOURCE_IDENTIFIER").addAttribute("value", resourceId);
312
		head.addElement("DATABASE").addAttribute("value", database);
313
		head.addElement("TABLE").addAttribute("value", table);
314
		head.addElement("DATE").addAttribute("value", DateUtils.now_ISO8601());
315

    
316
		Element body = root.addElement("BODY");
317

    
318
		Element row = body.addElement("ROW");
319

    
320
		for (Map.Entry<?, ?> entry : map.entrySet()) {
321
			Element col = row.addElement("FIELD");
322
			col.addAttribute("name", "" + entry.getKey());
323
			addValue(col, entry.getValue());
324
		}
325

    
326
		return doc;
327
	}
328

    
329
	private void addValue(final Element elem, final Object value) throws DatabaseException {
330
		if (value instanceof Array) {
331
			try {
332
				final Array arrayValue = (Array) value;
333
				for (Object o : (Object[]) arrayValue.getArray()) {
334
					addValue(elem.addElement("ITEM"), o);
335
				}
336
			} catch (Exception e) {
337
				log.error(e);
338
				throw new DatabaseException("Error procsessing a Array", e);
339
			}
340
		} else if (value != null) {
341
			elem.addText(Sanitizer.sanitize(value.toString()));
342
		} else {
343
			elem.addAttribute("isNull", "true");
344
		}
345
	}
346

    
347
	private void verifyParameters(final String... params) throws DatabaseException {
348
		Pattern pattern = Pattern.compile("\\w{1,128}");
349

    
350
		for (String p : params) {
351
			log.debug("TESTING SQL PARAM:" + p);
352
			if (p == null) throw new DatabaseException("Parameter is null");
353
			else if (!pattern.matcher(p).matches()) throw new DatabaseException("Parameter [" + p + "] contains an invalid character");
354
			else {
355
				log.debug("TEST OK");
356
			}
357
		}
358
	}
359

    
360
	public void importFromIterable(final String db, final Iterable<String> iterable) throws DatabaseException {
361
		verifyParameters(db);
362

    
363
		final DataSource dataSource = dataSourceFactory.createDataSource(db);
364
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(db);
365
		final TransactionTemplate transactionTemplate = transactionTemplateFactory.createTransactionTemplate(dataSource);
366

    
367
		int counterTotal = 0;
368

    
369
		long start = DateUtils.now();
370

    
371
		List<GenericRow> rows = new ArrayList<GenericRow>();
372
		for (String prof : iterable) {
373
			rows.addAll(obtainListOfRows(prof));
374
			if (rows.size() > numbersOfRecordsForTransaction) {
375
				counterTotal += rows.size();
376
				importTransaction(jdbcTemplate, transactionTemplate, rows);
377
				rows.clear();
378
			}
379
		}
380
		counterTotal += rows.size();
381
		importTransaction(jdbcTemplate, transactionTemplate, rows);
382

    
383
		long end = DateUtils.now();
384

    
385
		log.info("**********************************************************");
386
		log.info("Processed " + counterTotal + " rows in " + ((end - start) / 1000) + " seconds");
387
		log.info("**********************************************************");
388
	}
389

    
390
	private void importTransaction(final JdbcTemplate jdbcTemplate, final TransactionTemplate transactionTemplate, List<GenericRow> rows)
391
			throws DatabaseException {
392
		if (rows != null && rows.size() > 0) {
393
			importTransactionInternal(jdbcTemplate, transactionTemplate, rows);
394
		}
395
	}
396

    
397
	private List<GenericRow> importTransactionInternal(final JdbcTemplate jdbcTemplate,
398
			final TransactionTemplate transactionTemplate,
399
			final List<GenericRow> rows) throws DatabaseException {
400

    
401
		final AtomicReference<DatabaseException> error = new AtomicReference<DatabaseException>();
402

    
403
		try {
404
			return transactionTemplate.execute(status -> {
405
				final List<GenericRow> ok = Lists.newArrayList();
406
				try {
407
					for (GenericRow row : rows) {
408
						if (row.isToDelete()) {
409
							deleteRow(jdbcTemplate, row.getTable(), row.getFields());
410
						} else {
411
							addOrUpdateRow(jdbcTemplate, row.getTable(), row.getFields());
412
						}
413
						ok.add(row);
414
					}
415
				} catch (DatabaseException e) {
416
					log.warn("Transaction failed", e);
417
					status.setRollbackOnly();
418
					error.set(e);
419
				}
420
				return ok;
421
			});
422
		} finally {
423
			if (error.get() != null) {
424
				throw error.get();
425
			}
426
		}
427
	}
428

    
429
	protected void addOrUpdateRow(final JdbcTemplate jdbcTemplate, final String table, final Map<String, Object> rowFields) throws DatabaseException {
430
		try {
431

    
432
			if (log.isDebugEnabled()) {
433
				log.debug("Adding or updating element to table " + table);
434
			}
435
			verifyParameters(table);
436
			verifyParameters(rowFields.keySet().toArray(new String[rowFields.size()]));
437

    
438
			String fields = "";
439
			String values = "";
440
			List<Object> list = new ArrayList<Object>();
441

    
442
			for (Map.Entry<String, Object> e : rowFields.entrySet()) {
443
				if (!fields.isEmpty()) {
444
					fields += ",";
445
				}
446
				fields += e.getKey();
447
				if (!values.isEmpty()) {
448
					values += ",";
449
				}
450
				values += "?";
451
				list.add(e.getValue());
452
			}
453

    
454
			int count = 0;
455
			if (rowFields.containsKey(DNET_RESOURCE_ID_FIELD)) {
456
				List<Object> list2 = new ArrayList<Object>();
457
				list2.addAll(list);
458
				list2.add(rowFields.get(DNET_RESOURCE_ID_FIELD));
459
				count =
460
						jdbcTemplate.update("UPDATE " + table + " SET (" + fields + ") = (" + values + ") WHERE " + DNET_RESOURCE_ID_FIELD + "=?",
461
								list2.toArray());
462
			}
463
			if (count == 0) {
464
				jdbcTemplate.update("INSERT INTO " + table + " (" + fields + ") VALUES (" + values + ")", list.toArray());
465
			}
466
		} catch (final Exception e) {
467
			throw new DatabaseException("Error adding or updating record", e);
468
		}
469
	}
470

    
471
	protected void deleteRow(final JdbcTemplate jdbcTemplate, final String table, final Map<String, Object> rowFields) throws DatabaseException {
472
		if (log.isDebugEnabled()) {
473
			log.debug("Deleting element from table " + table);
474
		}
475
		verifyParameters(table);
476
		verifyParameters(rowFields.keySet().toArray(new String[rowFields.size()]));
477

    
478
		List<Object> list = new ArrayList<Object>();
479

    
480
		String where = "";
481

    
482
		for (Map.Entry<String, Object> e : rowFields.entrySet()) {
483
			if (!where.isEmpty()) {
484
				where += " AND ";
485
			}
486
			where += e.getKey() + "=?";
487
			list.add(e.getValue());
488
		}
489

    
490
		if (where.isEmpty()) throw new DatabaseException("Delete condition is empty");
491
		int n = jdbcTemplate.update("DELETE FROM " + table + " WHERE " + where, list.toArray());
492

    
493
		if (log.isDebugEnabled()) {
494
			log.debug("Number of Deleted records: " + n);
495
		}
496
	}
497

    
498
	public void deleteRowByResourceId(final String database, final String table, final String resourceIdentifier) throws DatabaseException {
499
		verifyParameters(database, table, resourceIdentifier);
500
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
501
		jdbcTemplate.update("DELETE FROM " + table + " WHERE " + DNET_RESOURCE_ID_FIELD + "=?", resourceIdentifier);
502
	}
503

    
504
	public void clearTable(final String database, final String table) throws DatabaseException {
505
		verifyParameters(database, table);
506

    
507
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
508
		jdbcTemplate.update("DELETE FROM " + table);
509
	}
510

    
511
	public void prepareManagementOfTable(final String database, final String table) throws DatabaseException {
512
		verifyParameters(database, table);
513
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
514

    
515
		if (!isManagedTable(jdbcTemplate, table)) {
516
			jdbcTemplate.update(getSQLFromTemplate("manageTable", database, table, null));
517
			log.info("Added management of table " + table);
518
		}
519
	}
520

    
521
	public void removeManagementOfTable(final String database, final String table) throws DatabaseException {
522
		verifyParameters(database, table);
523
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
524

    
525
		if (isManagedTable(jdbcTemplate, table)) {
526
			jdbcTemplate.update(getSQLFromTemplate("unmanageTable", database, table, null));
527
			log.info("Removed management of table " + table);
528
		}
529
	}
530

    
531
	public boolean isManagedTable(final String database, final String table) throws DatabaseException {
532
		verifyParameters(database, table);
533
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
534
		return isManagedTable(jdbcTemplate, table);
535
	}
536

    
537
	private boolean isManagedTable(final JdbcTemplate jdbcTemplate, final String table) {
538
		return jdbcTemplate.queryForObject("SELECT count(*) FROM information_schema.columns WHERE table_name = ? AND column_name = ?", Integer.class,
539
				table, DNET_RESOURCE_ID_FIELD) == 1;
540
	}
541

    
542
	public boolean isLoggedTable(final String database, final String table) throws DatabaseException {
543
		verifyParameters(database, table);
544
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
545
		return isLoggedTable(jdbcTemplate, table);
546
	}
547

    
548
	private boolean isLoggedTable(final JdbcTemplate jdbcTemplate, final String table) {
549
		return jdbcTemplate.queryForObject("SELECT count(*) FROM information_schema.tables WHERE table_name = ?", Integer.class,
550
				table + "_log") == 1;
551
	}
552

    
553
	public String getDefaultDnetIdentifier(final String database, final String table) throws DatabaseException {
554
		verifyParameters(database, table);
555
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
556
		if (isManagedTable(jdbcTemplate, table)) return jdbcTemplate.queryForObject(
557
				"SELECT column_default FROM information_schema.columns WHERE table_name = ? AND column_name = ?", new Object[] {
558
						table, DNET_RESOURCE_ID_FIELD }, String.class);
559
		return "";
560
	}
561

    
562
	public void reassignDefaultDnetIdentifiers(final String db) throws DatabaseException {
563
		for (String t : listCommonDBTables(db)) {
564
			reassignDefaultDnetIdentifiers(db, t);
565
		}
566
	}
567

    
568
	public void reassignDefaultDnetIdentifiers(final String db, final String t) throws DatabaseException {
569
		if (!isManagedTable(db, t)) return;
570

    
571
		SqlRowSet rows =
572
				executeSql(db, "SELECT pg_attribute.attname as pkey FROM pg_index, pg_class, pg_attribute " + "WHERE pg_class.oid = '" + t + "'::regclass "
573
						+ "AND indrelid = pg_class.oid " + "AND pg_attribute.attrelid = pg_class.oid "
574
						+ "AND pg_attribute.attnum = any(pg_index.indkey) AND indisprimary " + "ORDER BY pkey", SqlRowSet.class);
575

    
576
		String defaultValue = "";
577
		while (rows.next()) {
578
			if (!defaultValue.isEmpty()) {
579
				defaultValue += "||'@@'||";
580
			}
581
			defaultValue += rows.getString("pkey");
582
		}
583
		executeSql(db, "UPDATE " + t + " SET " + DatabaseUtils.DNET_RESOURCE_ID_FIELD + " = " + defaultValue);
584
		log.info("Reassigned dnetId for table " + t);
585
	}
586

    
587
	public String getSQLFromTemplate(final String sqlTemplate, final String db, final String table, Map<String, Object> map) {
588
		if (map == null) {
589
			map = new HashMap<String, Object>();
590
		}
591

    
592
		map.put("mainDB", defaultDB);
593
		map.put("db", db);
594
		map.put("table", table);
595
		map.put("idField", DNET_RESOURCE_ID_FIELD);
596

    
597
		return VelocityEngineUtils.mergeTemplateIntoString(velocityEngine, "eu/dnetlib/enabling/database/velocity/" + sqlTemplate + ".sql.vm", "UTF-8", map);
598
	}
599

    
600
	public List<GenericRow> obtainListOfRows(final String xml) throws DatabaseException {
601
		try {
602
			Document doc = new SAXReader().read(new StringReader(xml));
603

    
604
			List<GenericRow> list = new ArrayList<GenericRow>();
605

    
606
			for (Object or : doc.selectNodes("//ROW")) {
607
				Element row = (Element) or;
608

    
609
				String table = row.valueOf("@table");
610

    
611
				if ((table == null) || table.isEmpty()) throw new DatabaseException("Attribute table is missing in XSLT");
612

    
613
				boolean toDelete = "deleted".equals(row.valueOf("@status"));
614

    
615
				Map<String, Object> fields = new HashMap<String, Object>();
616

    
617
				for (Object of : row.selectNodes("./FIELD")) {
618
					Node node = (Node) of;
619
					String key = node.valueOf("@name");
620
					String type = node.valueOf("@type");
621
					String format = node.valueOf("@format");
622
					String valueS = node.getText().trim();
623

    
624
					if ((key != null) && !key.isEmpty()) {
625
						Object value = valueS;
626
						if (type != null) {
627

    
628
							try {
629
								// probably an empty string in a typed field means null
630
								if ("".equals(valueS)) {
631
									value = null;
632
								} else if (type.equals("int")) {
633
									value = Integer.parseInt(valueS);
634
								} else if (type.equals("float")) {
635
									value = Float.parseFloat(valueS);
636
								} else if (type.equals("boolean")) {
637
									value = parseBoolean(valueS);
638
								} else if (type.equals("date")) {
639
									value = parseDate(valueS, format);
640
								} else if (type.equals("iso8601Date")) {
641
									DateTime date = ISODateTimeFormat.dateTimeParser().parseDateTime(valueS);
642
									value = date.toDate();
643
									// value = new DateUtils().parse(valueS);
644
								}
645
							} catch (IllegalArgumentException e) {
646
								log.fatal("cannot convert '" + valueS + "' to " + type, e);
647
								throw e;
648
							}
649
						}
650
						fields.put(key, value);
651
					}
652
				}
653

    
654
				list.add(new GenericRow(table, fields, toDelete));
655
			}
656
			return list;
657
		} catch (Exception e) {
658
			log.error("Error obtaining list of rows from xml: " + xml);
659
			throw new DatabaseException(e);
660
		}
661
	}
662

    
663
	protected boolean parseBoolean(final String s) {
664
		if (TRUE_VALUES.contains(s.toLowerCase().trim())) return true;
665
		if (FALSE_VALUES.contains(s.toLowerCase().trim())) return false;
666

    
667
		return BooleanUtils.toBoolean(s);
668
	}
669

    
670
	public void setManaged(final String dbName, final boolean managed) throws DatabaseException {
671
		verifyParameters(dbName);
672
		JdbcTemplate jdbcTemplate = getJdbcTemplate(dbName);
673
		if (managed) {
674
			jdbcTemplate.update("COMMENT ON DATABASE " + dbName + " IS 'isManaged'");
675
		} else {
676
			jdbcTemplate.update("COMMENT ON DATABASE " + dbName + " IS NULL");
677
		}
678
	}
679

    
680
	// public for testing
681
	public Date parseDate(final String date, String format) {
682
		if ((format == null) || format.isEmpty()) {
683
			format = SQL_DATE_FORMAT;
684
		}
685
		try {
686
			java.util.Date parsed = new SimpleDateFormat(format).parse(date);
687
			String ret = new SimpleDateFormat(SQL_DATE_FORMAT).format(parsed);
688
			return Date.valueOf(ret);
689
		} catch (ParseException e) {
690
			return null;
691
		}
692
	}
693

    
694
	private JdbcTemplate getJdbcTemplate(final String dbName) {
695
		JdbcTemplate jdbcTemplate = jdbcTemplateFactory.createJdbcTemplate(dbName);
696
		jdbcTemplate.setFetchSize(getFetchSize());
697
		return jdbcTemplate;
698
	}
699

    
700
	@Required
701
	public void setVelocityEngine(final VelocityEngine velocityEngine) {
702
		this.velocityEngine = velocityEngine;
703
	}
704

    
705
	public String getDbPrefix() {
706
		return dbPrefix;
707
	}
708

    
709
	@Required
710
	public void setDbPrefix(final String dbPrefix) {
711
		this.dbPrefix = dbPrefix;
712
	}
713

    
714
	public DataSourceFactory getDataSourceFactory() {
715
		return dataSourceFactory;
716
	}
717

    
718
	@Required
719
	public void setDataSourceFactory(final DataSourceFactory dataSourceFactory) {
720
		this.dataSourceFactory = dataSourceFactory;
721
	}
722

    
723
	public JdbcTemplateFactory getJdbcTemplateFactory() {
724
		return jdbcTemplateFactory;
725
	}
726

    
727
	@Required
728
	public void setJdbcTemplateFactory(final JdbcTemplateFactory jdbcTemplateFactory) {
729
		this.jdbcTemplateFactory = jdbcTemplateFactory;
730
	}
731

    
732
	public TransactionTemplateFactory getTransactionTemplateFactory() {
733
		return transactionTemplateFactory;
734
	}
735

    
736
	@Required
737
	public void setTransactionTemplateFactory(final TransactionTemplateFactory transactionTemplateFactory) {
738
		this.transactionTemplateFactory = transactionTemplateFactory;
739
	}
740

    
741
	public int getNumbersOfRecordsForTransaction() {
742
		return numbersOfRecordsForTransaction;
743
	}
744

    
745
	@Required
746
	public void setNumbersOfRecordsForTransaction(final int numbersOfRecordsForTransaction) {
747
		this.numbersOfRecordsForTransaction = numbersOfRecordsForTransaction;
748
	}
749

    
750
	public String getDefaultDB() {
751
		return defaultDB;
752
	}
753

    
754
	@Required
755
	public void setDefaultDB(final String defaultDB) {
756
		this.defaultDB = defaultDB;
757
	}
758

    
759
	public int getFetchSize() {
760
		return fetchSize;
761
	}
762

    
763
	public void setFetchSize(final int fetchSize) {
764
		this.fetchSize = fetchSize;
765
	}
766

    
767
	public class TableDates {
768

    
769
		private java.sql.Date lastInsert;
770
		private java.sql.Date lastUpdate;
771
		private java.sql.Date lastDelete;
772

    
773
		public java.sql.Date getLastInsert() {
774
			return lastInsert;
775
		}
776

    
777
		public void setLastInsert(final Date lastInsert) {
778
			this.lastInsert = lastInsert;
779
		}
780

    
781
		public Date getLastUpdate() {
782
			return lastUpdate;
783
		}
784

    
785
		public void setLastUpdate(final Date lastUpdate) {
786
			this.lastUpdate = lastUpdate;
787
		}
788

    
789
		public Date getLastDelete() {
790
			return lastDelete;
791
		}
792

    
793
		public void setLastDelete(final Date lastDelete) {
794
			this.lastDelete = lastDelete;
795
		}
796
	}
797

    
798
}
(1-1/3)