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package eu.dnetlib.enabling.database.utils;
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3
import java.io.StringReader;
4
import java.sql.*;
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import java.sql.Date;
6
import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.*;
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import java.util.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.Executors;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.regex.Pattern;
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import javax.sql.DataSource;
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17
import com.google.common.collect.Lists;
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import com.google.common.collect.Queues;
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import com.google.common.collect.Sets;
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import eu.dnetlib.enabling.database.DataSourceFactory;
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import eu.dnetlib.enabling.database.TransactionTemplateFactory;
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import eu.dnetlib.enabling.database.objects.DnetDatabase;
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import eu.dnetlib.enabling.database.rmi.DatabaseException;
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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;
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import org.dom4j.Document;
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import org.dom4j.DocumentHelper;
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import org.dom4j.Element;
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import org.dom4j.Node;
34
import org.dom4j.io.SAXReader;
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import org.joda.time.DateTime;
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import org.joda.time.format.ISODateTimeFormat;
37
import org.springframework.beans.factory.annotation.Required;
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import org.springframework.dao.DataAccessException;
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import org.springframework.jdbc.core.JdbcTemplate;
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import org.springframework.jdbc.support.rowset.SqlRowSet;
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import org.springframework.transaction.support.TransactionTemplate;
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import org.springframework.ui.velocity.VelocityEngineUtils;
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44
public class DatabaseUtils {
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46
	public static final String DNET_RESOURCE_ID_FIELD = "_dnet_resource_identifier_";
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	public static final int BLOCKING_QUEUE_TIMEOUT = 300;
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	private static final String SQL_DATE_FORMAT = "yyyy-MM-dd";
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	private static final Log log = LogFactory.getLog(DatabaseUtils.class); // NOPMD by marko on 11/24/08 5:02 PM
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	private static final int BLOCKING_QUEUE_SIZE = 200;
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	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;
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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
	}
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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<Map<String, Object>> 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 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<Map<String, Object>> q, final Map<String, Object> row) {
204
		try {
205
			return q.offer(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
	}
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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
	}
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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
		Document doc = DocumentHelper.createDocument();
290

    
291
		Element row = doc.addElement("ROW");
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
				for (Object o : (Object[]) ((Array) value).getArray()) {
333
					addValue(elem.addElement("ITEM"), o);
334
				}
335
			} catch (Exception e) {
336
				throw new DatabaseException("Error procsessing a Array", e);
337
			}
338
		} else if (value != null) {
339
			elem.addText(Sanitizer.sanitize(value.toString()));
340
		} else {
341
			elem.addAttribute("isNull", "true");
342
		}
343
	}
344

    
345
	private void verifyParameters(final String... params) throws DatabaseException {
346
		Pattern pattern = Pattern.compile("\\w{1,128}");
347

    
348
		for (String p : params) {
349
			log.debug("TESTING SQL PARAM:" + p);
350
			if (p == null) throw new DatabaseException("Parameter is null");
351
			else if (!pattern.matcher(p).matches()) throw new DatabaseException("Parameter [" + p + "] contains an invalid character");
352
			else {
353
				log.debug("TEST OK");
354
			}
355
		}
356
	}
357

    
358
	public void importFromIterable(final String db, final Iterable<String> iterable) throws DatabaseException {
359
		verifyParameters(db);
360

    
361
		final DataSource dataSource = dataSourceFactory.createDataSource(db);
362
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(db);
363
		final TransactionTemplate transactionTemplate = transactionTemplateFactory.createTransactionTemplate(dataSource);
364

    
365
		int counterTotal = 0;
366

    
367
		long start = DateUtils.now();
368

    
369
		List<GenericRow> rows = new ArrayList<GenericRow>();
370
		for (String prof : iterable) {
371
			rows.addAll(obtainListOfRows(prof));
372
			if (rows.size() > numbersOfRecordsForTransaction) {
373
				counterTotal += rows.size();
374
				importTransaction(jdbcTemplate, transactionTemplate, rows);
375
				rows.clear();
376
			}
377
		}
378
		counterTotal += rows.size();
379
		importTransaction(jdbcTemplate, transactionTemplate, rows);
380

    
381
		long end = DateUtils.now();
382

    
383
		log.info("**********************************************************");
384
		log.info("Processed " + counterTotal + " rows in " + ((end - start) / 1000) + " seconds");
385
		log.info("**********************************************************");
386
	}
387

    
388
	private void importTransaction(final JdbcTemplate jdbcTemplate, final TransactionTemplate transactionTemplate, List<GenericRow> rows)
389
			throws DatabaseException {
390
		if (rows != null && rows.size() > 0) {
391
			importTransactionInternal(jdbcTemplate, transactionTemplate, rows);
392
		}
393
	}
394

    
395
	private List<GenericRow> importTransactionInternal(final JdbcTemplate jdbcTemplate,
396
			final TransactionTemplate transactionTemplate,
397
			final List<GenericRow> rows) throws DatabaseException {
398

    
399
		final AtomicReference<DatabaseException> error = new AtomicReference<DatabaseException>();
400

    
401
		try {
402
			return transactionTemplate.execute(status -> {
403
				final List<GenericRow> ok = Lists.newArrayList();
404
				try {
405
					for (GenericRow row : rows) {
406
						if (row.isToDelete()) {
407
							deleteRow(jdbcTemplate, row.getTable(), row.getFields());
408
						} else {
409
							addOrUpdateRow(jdbcTemplate, row.getTable(), row.getFields());
410
						}
411
						ok.add(row);
412
					}
413
				} catch (DatabaseException e) {
414
					log.warn("Transaction failed", e);
415
					status.setRollbackOnly();
416
					error.set(e);
417
				}
418
				return ok;
419
			});
420
		} finally {
421
			if (error.get() != null) {
422
				throw error.get();
423
			}
424
		}
425
	}
426

    
427
	protected void addOrUpdateRow(final JdbcTemplate jdbcTemplate, final String table, final Map<String, Object> rowFields) throws DatabaseException {
428
		try {
429

    
430
			if (log.isDebugEnabled()) {
431
				log.debug("Adding or updating element to table " + table);
432
			}
433
			verifyParameters(table);
434
			verifyParameters(rowFields.keySet().toArray(new String[rowFields.size()]));
435

    
436
			String fields = "";
437
			String values = "";
438
			List<Object> list = new ArrayList<Object>();
439

    
440
			for (Map.Entry<String, Object> e : rowFields.entrySet()) {
441
				if (!fields.isEmpty()) {
442
					fields += ",";
443
				}
444
				fields += e.getKey();
445
				if (!values.isEmpty()) {
446
					values += ",";
447
				}
448
				values += "?";
449
				list.add(e.getValue());
450
			}
451

    
452
			int count = 0;
453
			if (rowFields.containsKey(DNET_RESOURCE_ID_FIELD)) {
454
				List<Object> list2 = new ArrayList<Object>();
455
				list2.addAll(list);
456
				list2.add(rowFields.get(DNET_RESOURCE_ID_FIELD));
457
				count =
458
						jdbcTemplate.update("UPDATE " + table + " SET (" + fields + ") = (" + values + ") WHERE " + DNET_RESOURCE_ID_FIELD + "=?",
459
								list2.toArray());
460
			}
461
			if (count == 0) {
462
				jdbcTemplate.update("INSERT INTO " + table + " (" + fields + ") VALUES (" + values + ")", list.toArray());
463
			}
464
		} catch (final Exception e) {
465
			throw new DatabaseException("Error adding or updating record", e);
466
		}
467
	}
468

    
469
	protected void deleteRow(final JdbcTemplate jdbcTemplate, final String table, final Map<String, Object> rowFields) throws DatabaseException {
470
		if (log.isDebugEnabled()) {
471
			log.debug("Deleting element from table " + table);
472
		}
473
		verifyParameters(table);
474
		verifyParameters(rowFields.keySet().toArray(new String[rowFields.size()]));
475

    
476
		List<Object> list = new ArrayList<Object>();
477

    
478
		String where = "";
479

    
480
		for (Map.Entry<String, Object> e : rowFields.entrySet()) {
481
			if (!where.isEmpty()) {
482
				where += " AND ";
483
			}
484
			where += e.getKey() + "=?";
485
			list.add(e.getValue());
486
		}
487

    
488
		if (where.isEmpty()) throw new DatabaseException("Delete condition is empty");
489
		int n = jdbcTemplate.update("DELETE FROM " + table + " WHERE " + where, list.toArray());
490

    
491
		if (log.isDebugEnabled()) {
492
			log.debug("Number of Deleted records: " + n);
493
		}
494
	}
495

    
496
	public void deleteRowByResourceId(final String database, final String table, final String resourceIdentifier) throws DatabaseException {
497
		verifyParameters(database, table, resourceIdentifier);
498
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
499
		jdbcTemplate.update("DELETE FROM " + table + " WHERE " + DNET_RESOURCE_ID_FIELD + "=?", resourceIdentifier);
500
	}
501

    
502
	public void clearTable(final String database, final String table) throws DatabaseException {
503
		verifyParameters(database, table);
504

    
505
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
506
		jdbcTemplate.update("DELETE FROM " + table);
507
	}
508

    
509
	public void prepareManagementOfTable(final String database, final String table) throws DatabaseException {
510
		verifyParameters(database, table);
511
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
512

    
513
		if (!isManagedTable(jdbcTemplate, table)) {
514
			jdbcTemplate.update(getSQLFromTemplate("manageTable", database, table, null));
515
			log.info("Added management of table " + table);
516
		}
517
	}
518

    
519
	public void removeManagementOfTable(final String database, final String table) throws DatabaseException {
520
		verifyParameters(database, table);
521
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
522

    
523
		if (isManagedTable(jdbcTemplate, table)) {
524
			jdbcTemplate.update(getSQLFromTemplate("unmanageTable", database, table, null));
525
			log.info("Removed management of table " + table);
526
		}
527
	}
528

    
529
	public boolean isManagedTable(final String database, final String table) throws DatabaseException {
530
		verifyParameters(database, table);
531
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
532
		return isManagedTable(jdbcTemplate, table);
533
	}
534

    
535
	private boolean isManagedTable(final JdbcTemplate jdbcTemplate, final String table) {
536
		return jdbcTemplate.queryForObject("SELECT count(*) FROM information_schema.columns WHERE table_name = ? AND column_name = ?", Integer.class,
537
				table, DNET_RESOURCE_ID_FIELD) == 1;
538
	}
539

    
540
	public boolean isLoggedTable(final String database, final String table) throws DatabaseException {
541
		verifyParameters(database, table);
542
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
543
		return isLoggedTable(jdbcTemplate, table);
544
	}
545

    
546
	private boolean isLoggedTable(final JdbcTemplate jdbcTemplate, final String table) {
547
		return jdbcTemplate.queryForObject("SELECT count(*) FROM information_schema.tables WHERE table_name = ?", Integer.class,
548
				table + "_log") == 1;
549
	}
550

    
551
	public String getDefaultDnetIdentifier(final String database, final String table) throws DatabaseException {
552
		verifyParameters(database, table);
553
		final JdbcTemplate jdbcTemplate = getJdbcTemplate(database);
554
		if (isManagedTable(jdbcTemplate, table)) return jdbcTemplate.queryForObject(
555
				"SELECT column_default FROM information_schema.columns WHERE table_name = ? AND column_name = ?", new Object[] {
556
						table, DNET_RESOURCE_ID_FIELD }, String.class);
557
		return "";
558
	}
559

    
560
	public void reassignDefaultDnetIdentifiers(final String db) throws DatabaseException {
561
		for (String t : listCommonDBTables(db)) {
562
			reassignDefaultDnetIdentifiers(db, t);
563
		}
564
	}
565

    
566
	public void reassignDefaultDnetIdentifiers(final String db, final String t) throws DatabaseException {
567
		if (!isManagedTable(db, t)) return;
568

    
569
		SqlRowSet rows =
570
				executeSql(db, "SELECT pg_attribute.attname as pkey FROM pg_index, pg_class, pg_attribute " + "WHERE pg_class.oid = '" + t + "'::regclass "
571
						+ "AND indrelid = pg_class.oid " + "AND pg_attribute.attrelid = pg_class.oid "
572
						+ "AND pg_attribute.attnum = any(pg_index.indkey) AND indisprimary " + "ORDER BY pkey", SqlRowSet.class);
573

    
574
		String defaultValue = "";
575
		while (rows.next()) {
576
			if (!defaultValue.isEmpty()) {
577
				defaultValue += "||'@@'||";
578
			}
579
			defaultValue += rows.getString("pkey");
580
		}
581
		executeSql(db, "UPDATE " + t + " SET " + DatabaseUtils.DNET_RESOURCE_ID_FIELD + " = " + defaultValue);
582
		log.info("Reassigned dnetId for table " + t);
583
	}
584

    
585
	public String getSQLFromTemplate(final String sqlTemplate, final String db, final String table, Map<String, Object> map) {
586
		if (map == null) {
587
			map = new HashMap<String, Object>();
588
		}
589

    
590
		map.put("mainDB", defaultDB);
591
		map.put("db", db);
592
		map.put("table", table);
593
		map.put("idField", DNET_RESOURCE_ID_FIELD);
594

    
595
		return VelocityEngineUtils.mergeTemplateIntoString(velocityEngine, "eu/dnetlib/enabling/database/velocity/" + sqlTemplate + ".sql.vm", "UTF-8", map);
596
	}
597

    
598
	public List<GenericRow> obtainListOfRows(final String xml) throws DatabaseException {
599
		try {
600
			Document doc = new SAXReader().read(new StringReader(xml));
601

    
602
			List<GenericRow> list = new ArrayList<GenericRow>();
603

    
604
			for (Object or : doc.selectNodes("//ROW")) {
605
				Element row = (Element) or;
606

    
607
				String table = row.valueOf("@table");
608

    
609
				if ((table == null) || table.isEmpty()) throw new DatabaseException("Attribute table is missing in XSLT");
610

    
611
				boolean toDelete = "deleted".equals(row.valueOf("@status"));
612

    
613
				Map<String, Object> fields = new HashMap<String, Object>();
614

    
615
				for (Object of : row.selectNodes("./FIELD")) {
616
					Node node = (Node) of;
617
					String key = node.valueOf("@name");
618
					String type = node.valueOf("@type");
619
					String format = node.valueOf("@format");
620
					String valueS = node.getText().trim();
621

    
622
					if ((key != null) && !key.isEmpty()) {
623
						Object value = valueS;
624
						if (type != null) {
625

    
626
							try {
627
								// probably an empty string in a typed field means null
628
								if ("".equals(valueS)) {
629
									value = null;
630
								} else if (type.equals("int")) {
631
									value = Integer.parseInt(valueS);
632
								} else if (type.equals("float")) {
633
									value = Float.parseFloat(valueS);
634
								} else if (type.equals("boolean")) {
635
									value = parseBoolean(valueS);
636
								} else if (type.equals("date")) {
637
									value = parseDate(valueS, format);
638
								} else if (type.equals("iso8601Date")) {
639
									DateTime date = ISODateTimeFormat.dateTimeParser().parseDateTime(valueS);
640
									value = date.toDate();
641
									// value = new DateUtils().parse(valueS);
642
								}
643
							} catch (IllegalArgumentException e) {
644
								log.fatal("cannot convert '" + valueS + "' to " + type, e);
645
								throw e;
646
							}
647
						}
648
						fields.put(key, value);
649
					}
650
				}
651

    
652
				list.add(new GenericRow(table, fields, toDelete));
653
			}
654
			return list;
655
		} catch (Exception e) {
656
			log.error("Error obtaining list of rows from xml: " + xml);
657
			throw new DatabaseException(e);
658
		}
659
	}
660

    
661
	protected boolean parseBoolean(final String s) {
662
		if (TRUE_VALUES.contains(s.toLowerCase().trim())) return true;
663
		if (FALSE_VALUES.contains(s.toLowerCase().trim())) return false;
664

    
665
		return BooleanUtils.toBoolean(s);
666
	}
667

    
668
	public void setManaged(final String dbName, final boolean managed) throws DatabaseException {
669
		verifyParameters(dbName);
670
		JdbcTemplate jdbcTemplate = getJdbcTemplate(dbName);
671
		if (managed) {
672
			jdbcTemplate.update("COMMENT ON DATABASE " + dbName + " IS 'isManaged'");
673
		} else {
674
			jdbcTemplate.update("COMMENT ON DATABASE " + dbName + " IS NULL");
675
		}
676
	}
677

    
678
	// public for testing
679
	public Date parseDate(final String date, String format) {
680
		if ((format == null) || format.isEmpty()) {
681
			format = SQL_DATE_FORMAT;
682
		}
683
		try {
684
			java.util.Date parsed = new SimpleDateFormat(format).parse(date);
685
			String ret = new SimpleDateFormat(SQL_DATE_FORMAT).format(parsed);
686
			return Date.valueOf(ret);
687
		} catch (ParseException e) {
688
			return null;
689
		}
690
	}
691

    
692
	private JdbcTemplate getJdbcTemplate(final String dbName) {
693
		JdbcTemplate jdbcTemplate = jdbcTemplateFactory.createJdbcTemplate(dbName);
694
		jdbcTemplate.setFetchSize(getFetchSize());
695
		return jdbcTemplate;
696
	}
697

    
698
	@Required
699
	public void setVelocityEngine(final VelocityEngine velocityEngine) {
700
		this.velocityEngine = velocityEngine;
701
	}
702

    
703
	public String getDbPrefix() {
704
		return dbPrefix;
705
	}
706

    
707
	@Required
708
	public void setDbPrefix(final String dbPrefix) {
709
		this.dbPrefix = dbPrefix;
710
	}
711

    
712
	public DataSourceFactory getDataSourceFactory() {
713
		return dataSourceFactory;
714
	}
715

    
716
	@Required
717
	public void setDataSourceFactory(final DataSourceFactory dataSourceFactory) {
718
		this.dataSourceFactory = dataSourceFactory;
719
	}
720

    
721
	public JdbcTemplateFactory getJdbcTemplateFactory() {
722
		return jdbcTemplateFactory;
723
	}
724

    
725
	@Required
726
	public void setJdbcTemplateFactory(final JdbcTemplateFactory jdbcTemplateFactory) {
727
		this.jdbcTemplateFactory = jdbcTemplateFactory;
728
	}
729

    
730
	public TransactionTemplateFactory getTransactionTemplateFactory() {
731
		return transactionTemplateFactory;
732
	}
733

    
734
	@Required
735
	public void setTransactionTemplateFactory(final TransactionTemplateFactory transactionTemplateFactory) {
736
		this.transactionTemplateFactory = transactionTemplateFactory;
737
	}
738

    
739
	public int getNumbersOfRecordsForTransaction() {
740
		return numbersOfRecordsForTransaction;
741
	}
742

    
743
	@Required
744
	public void setNumbersOfRecordsForTransaction(final int numbersOfRecordsForTransaction) {
745
		this.numbersOfRecordsForTransaction = numbersOfRecordsForTransaction;
746
	}
747

    
748
	public String getDefaultDB() {
749
		return defaultDB;
750
	}
751

    
752
	@Required
753
	public void setDefaultDB(final String defaultDB) {
754
		this.defaultDB = defaultDB;
755
	}
756

    
757
	public int getFetchSize() {
758
		return fetchSize;
759
	}
760

    
761
	public void setFetchSize(final int fetchSize) {
762
		this.fetchSize = fetchSize;
763
	}
764

    
765
	public class TableDates {
766

    
767
		private java.sql.Date lastInsert;
768
		private java.sql.Date lastUpdate;
769
		private java.sql.Date lastDelete;
770

    
771
		public java.sql.Date getLastInsert() {
772
			return lastInsert;
773
		}
774

    
775
		public void setLastInsert(final Date lastInsert) {
776
			this.lastInsert = lastInsert;
777
		}
778

    
779
		public Date getLastUpdate() {
780
			return lastUpdate;
781
		}
782

    
783
		public void setLastUpdate(final Date lastUpdate) {
784
			this.lastUpdate = lastUpdate;
785
		}
786

    
787
		public Date getLastDelete() {
788
			return lastDelete;
789
		}
790

    
791
		public void setLastDelete(final Date lastDelete) {
792
			this.lastDelete = lastDelete;
793
		}
794
	}
795

    
796
}
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