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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

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1+/*
2+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package javax.sql.rowset.serial;
27+
28+import java.sql.*;
29+import javax.sql.*;
30+import java.io.*;
31+import java.lang.String;
32+import java.math.*;
33+import java.util.Map;
34+import java.util.Vector;
35+
36+/**
37+ * The output stream for writing the attributes of a
38+ * custom-mapped user-defined type (UDT) back to the database.
39+ * The driver uses this interface internally, and its
40+ * methods are never directly invoked by an application programmer.
41+ * <p>
42+ * When an application calls the
43+ * method <code>PreparedStatement.setObject</code>, the driver
44+ * checks to see whether the value to be written is a UDT with
45+ * a custom mapping. If it is, there will be an entry in a
46+ * type map containing the <code>Class</code> object for the
47+ * class that implements <code>SQLData</code> for this UDT.
48+ * If the value to be written is an instance of <code>SQLData</code>,
49+ * the driver will create an instance of <code>SQLOutputImpl</code>
50+ * and pass it to the method <code>SQLData.writeSQL</code>.
51+ * The method <code>writeSQL</code> in turn calls the
52+ * appropriate <code>SQLOutputImpl.writeXXX</code> methods
53+ * to write data from the <code>SQLData</code> object to
54+ * the <code>SQLOutputImpl</code> output stream as the
55+ * representation of an SQL user-defined type.
56+ */
57+public class SQLOutputImpl implements SQLOutput {
58+
59+ /**
60+ * A reference to an existing vector that
61+ * contains the attributes of a <code>Struct</code> object.
62+ */
63+ private Vector attribs;
64+
65+ /**
66+ * The type map the driver supplies to a newly created
67+ * <code>SQLOutputImpl</code> object. This type map
68+ * indicates the <code>SQLData</code> class whose
69+ * <code>writeSQL</code> method will be called. This
70+ * method will in turn call the appropriate
71+ * <code>SQLOutputImpl</code> writer methods.
72+ */
73+ private Map map;
74+
75+ /**
76+ * Creates a new <code>SQLOutputImpl</code> object
77+ * initialized with the given vector of attributes and
78+ * type map. The driver will use the type map to determine
79+ * which <code>SQLData.writeSQL</code> method to invoke.
80+ * This method will then call the appropriate
81+ * <code>SQLOutputImpl</code> writer methods in order and
82+ * thereby write the attributes to the new output stream.
83+ *
84+ * @param attributes a <code>Vector</code> object containing the attributes of
85+ * the UDT to be mapped to one or more objects in the Java
86+ * programming language
87+ *
88+ * @param map a <code>java.util.Map</code> object containing zero or
89+ * more entries, with each entry consisting of 1) a <code>String</code>
90+ * giving the fully qualified name of a UDT and 2) the
91+ * <code>Class</code> object for the <code>SQLData</code> implementation
92+ * that defines how the UDT is to be mapped
93+ * @throws SQLException if the <code>attributes</code> or the <code>map</code>
94+ * is a <code>null</code> value
95+ */
96+ public SQLOutputImpl(Vector<?> attributes, Map<String,?> map)
97+ throws SQLException
98+ {
99+ if ((attributes == null) || (map == null)) {
100+ throw new SQLException("Cannot instantiate a SQLOutputImpl " +
101+ "instance with null parameters");
102+ }
103+ this.attribs = attributes;
104+ this.map = map;
105+ }
106+
107+ //================================================================
108+ // Methods for writing attributes to the stream of SQL data.
109+ // These methods correspond to the column-accessor methods of
110+ // java.sql.ResultSet.
111+ //================================================================
112+
113+ /**
114+ * Writes a <code>String</code> in the Java programming language
115+ * to this <code>SQLOutputImpl</code> object. The driver converts
116+ * it to an SQL <code>CHAR</code>, <code>VARCHAR</code>, or
117+ * <code>LONGVARCHAR</code> before returning it to the database.
118+ *
119+ * @param x the value to pass to the database
120+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
121+ * use by a <code>SQLData</code> object attempting to write the attribute
122+ * values of a UDT to the database.
123+ */
124+ public void writeString(String x) throws SQLException {
125+ //System.out.println("Adding :"+x);
126+ attribs.add(x);
127+ }
128+
129+ /**
130+ * Writes a <code>boolean</code> in the Java programming language
131+ * to this <code>SQLOutputImpl</code> object. The driver converts
132+ * it to an SQL <code>BIT</code> before returning it to the database.
133+ *
134+ * @param x the value to pass to the database
135+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
136+ * use by a <code>SQLData</code> object attempting to write the attribute
137+ * values of a UDT to the database.
138+ */
139+ public void writeBoolean(boolean x) throws SQLException {
140+ attribs.add(Boolean.valueOf(x));
141+ }
142+
143+ /**
144+ * Writes a <code>byte</code> in the Java programming language
145+ * to this <code>SQLOutputImpl</code> object. The driver converts
146+ * it to an SQL <code>BIT</code> before returning it to the database.
147+ *
148+ * @param x the value to pass to the database
149+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
150+ * use by a <code>SQLData</code> object attempting to write the attribute
151+ * values of a UDT to the database.
152+ */
153+ public void writeByte(byte x) throws SQLException {
154+ attribs.add(Byte.valueOf(x));
155+ }
156+
157+ /**
158+ * Writes a <code>short</code> in the Java programming language
159+ * to this <code>SQLOutputImpl</code> object. The driver converts
160+ * it to an SQL <code>SMALLINT</code> before returning it to the database.
161+ *
162+ * @param x the value to pass to the database
163+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
164+ * use by a <code>SQLData</code> object attempting to write the attribute
165+ * values of a UDT to the database.
166+ */
167+ public void writeShort(short x) throws SQLException {
168+ attribs.add(Short.valueOf(x));
169+ }
170+
171+ /**
172+ * Writes an <code>int</code> in the Java programming language
173+ * to this <code>SQLOutputImpl</code> object. The driver converts
174+ * it to an SQL <code>INTEGER</code> before returning it to the database.
175+ *
176+ * @param x the value to pass to the database
177+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
178+ * use by a <code>SQLData</code> object attempting to write the attribute
179+ * values of a UDT to the database.
180+ */
181+ public void writeInt(int x) throws SQLException {
182+ attribs.add(Integer.valueOf(x));
183+ }
184+
185+ /**
186+ * Writes a <code>long</code> in the Java programming language
187+ * to this <code>SQLOutputImpl</code> object. The driver converts
188+ * it to an SQL <code>BIGINT</code> before returning it to the database.
189+ *
190+ * @param x the value to pass to the database
191+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
192+ * use by a <code>SQLData</code> object attempting to write the attribute
193+ * values of a UDT to the database.
194+ */
195+ public void writeLong(long x) throws SQLException {
196+ attribs.add(Long.valueOf(x));
197+ }
198+
199+ /**
200+ * Writes a <code>float</code> in the Java programming language
201+ * to this <code>SQLOutputImpl</code> object. The driver converts
202+ * it to an SQL <code>REAL</code> before returning it to the database.
203+ *
204+ * @param x the value to pass to the database
205+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
206+ * use by a <code>SQLData</code> object attempting to write the attribute
207+ * values of a UDT to the database.
208+ */
209+ public void writeFloat(float x) throws SQLException {
210+ attribs.add(new Float(x));
211+ }
212+
213+ /**
214+ * Writes a <code>double</code> in the Java programming language
215+ * to this <code>SQLOutputImpl</code> object. The driver converts
216+ * it to an SQL <code>DOUBLE</code> before returning it to the database.
217+ *
218+ * @param x the value to pass to the database
219+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
220+ * use by a <code>SQLData</code> object attempting to write the attribute
221+ * values of a UDT to the database.
222+ */
223+ public void writeDouble(double x) throws SQLException{
224+ attribs.add(new Double(x));
225+ }
226+
227+ /**
228+ * Writes a <code>java.math.BigDecimal</code> object in the Java programming
229+ * language to this <code>SQLOutputImpl</code> object. The driver converts
230+ * it to an SQL <code>NUMERIC</code> before returning it to the database.
231+ *
232+ * @param x the value to pass to the database
233+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
234+ * use by a <code>SQLData</code> object attempting to write the attribute
235+ * values of a UDT to the database.
236+ */
237+ public void writeBigDecimal(java.math.BigDecimal x) throws SQLException{
238+ attribs.add(x);
239+ }
240+
241+ /**
242+ * Writes an array of <code>bytes</code> in the Java programming language
243+ * to this <code>SQLOutputImpl</code> object. The driver converts
244+ * it to an SQL <code>VARBINARY</code> or <code>LONGVARBINARY</code>
245+ * before returning it to the database.
246+ *
247+ * @param x the value to pass to the database
248+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
249+ * use by a <code>SQLData</code> object attempting to write the attribute
250+ * values of a UDT to the database.
251+ */
252+ public void writeBytes(byte[] x) throws SQLException {
253+ attribs.add(x);
254+ }
255+
256+ /**
257+ * Writes a <code>java.sql.Date</code> object in the Java programming
258+ * language to this <code>SQLOutputImpl</code> object. The driver converts
259+ * it to an SQL <code>DATE</code> before returning it to the database.
260+ *
261+ * @param x the value to pass to the database
262+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
263+ * use by a <code>SQLData</code> object attempting to write the attribute
264+ * values of a UDT to the database.
265+ */
266+ public void writeDate(java.sql.Date x) throws SQLException {
267+ attribs.add(x);
268+ }
269+
270+ /**
271+ * Writes a <code>java.sql.Time</code> object in the Java programming
272+ * language to this <code>SQLOutputImpl</code> object. The driver converts
273+ * it to an SQL <code>TIME</code> before returning it to the database.
274+ *
275+ * @param x the value to pass to the database
276+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
277+ * use by a <code>SQLData</code> object attempting to write the attribute
278+ * values of a UDT to the database.
279+ */
280+ public void writeTime(java.sql.Time x) throws SQLException {
281+ attribs.add(x);
282+ }
283+
284+ /**
285+ * Writes a <code>java.sql.Timestamp</code> object in the Java programming
286+ * language to this <code>SQLOutputImpl</code> object. The driver converts
287+ * it to an SQL <code>TIMESTAMP</code> before returning it to the database.
288+ *
289+ * @param x the value to pass to the database
290+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
291+ * use by a <code>SQLData</code> object attempting to write the attribute
292+ * values of a UDT to the database.
293+ */
294+ public void writeTimestamp(java.sql.Timestamp x) throws SQLException {
295+ attribs.add(x);
296+ }
297+
298+ /**
299+ * Writes a stream of Unicode characters to this
300+ * <code>SQLOutputImpl</code> object. The driver will do any necessary
301+ * conversion from Unicode to the database <code>CHAR</code> format.
302+ *
303+ * @param x the value to pass to the database
304+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
305+ * use by a <code>SQLData</code> object attempting to write the attribute
306+ * values of a UDT to the database.
307+ */
308+ public void writeCharacterStream(java.io.Reader x) throws SQLException {
309+ BufferedReader bufReader = new BufferedReader(x);
310+ try {
311+ int i;
312+ while( (i = bufReader.read()) != -1 ) {
313+ char ch = (char)i;
314+ StringBuffer strBuf = new StringBuffer();
315+ strBuf.append(ch);
316+
317+ String str = new String(strBuf);
318+ String strLine = bufReader.readLine();
319+
320+ writeString(str.concat(strLine));
321+ }
322+ } catch(IOException ioe) {
323+
324+ }
325+ }
326+
327+ /**
328+ * Writes a stream of ASCII characters to this
329+ * <code>SQLOutputImpl</code> object. The driver will do any necessary
330+ * conversion from ASCII to the database <code>CHAR</code> format.
331+ *
332+ * @param x the value to pass to the database
333+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
334+ * use by a <code>SQLData</code> object attempting to write the attribute
335+ * values of a UDT to the database.
336+ */
337+ public void writeAsciiStream(java.io.InputStream x) throws SQLException {
338+ BufferedReader bufReader = new BufferedReader(new InputStreamReader(x));
339+ try {
340+ int i;
341+ while( (i=bufReader.read()) != -1 ) {
342+ char ch = (char)i;
343+
344+ StringBuffer strBuf = new StringBuffer();
345+ strBuf.append(ch);
346+
347+ String str = new String(strBuf);
348+ String strLine = bufReader.readLine();
349+
350+ writeString(str.concat(strLine));
351+ }
352+ }catch(IOException ioe) {
353+ throw new SQLException(ioe.getMessage());
354+ }
355+ }
356+
357+ /**
358+ * Writes a stream of uninterpreted bytes to this <code>SQLOutputImpl</code>
359+ * object.
360+ *
361+ * @param x the value to pass to the database
362+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
363+ * use by a <code>SQLData</code> object attempting to write the attribute
364+ * values of a UDT to the database.
365+ */
366+ public void writeBinaryStream(java.io.InputStream x) throws SQLException {
367+ BufferedReader bufReader = new BufferedReader(new InputStreamReader(x));
368+ try {
369+ int i;
370+ while( (i=bufReader.read()) != -1 ) {
371+ char ch = (char)i;
372+
373+ StringBuffer strBuf = new StringBuffer();
374+ strBuf.append(ch);
375+
376+ String str = new String(strBuf);
377+ String strLine = bufReader.readLine();
378+
379+ writeString(str.concat(strLine));
380+ }
381+ } catch(IOException ioe) {
382+ throw new SQLException(ioe.getMessage());
383+ }
384+ }
385+
386+ //================================================================
387+ // Methods for writing items of SQL user-defined types to the stream.
388+ // These methods pass objects to the database as values of SQL
389+ // Structured Types, Distinct Types, Constructed Types, and Locator
390+ // Types. They decompose the Java object(s) and write leaf data
391+ // items using the methods above.
392+ //================================================================
393+
394+ /**
395+ * Writes to the stream the data contained in the given
396+ * <code>SQLData</code> object.
397+ * When the <code>SQLData</code> object is <code>null</code>, this
398+ * method writes an SQL <code>NULL</code> to the stream.
399+ * Otherwise, it calls the <code>SQLData.writeSQL</code>
400+ * method of the given object, which
401+ * writes the object's attributes to the stream.
402+ * <P>
403+ * The implementation of the method <code>SQLData.writeSQ</code>
404+ * calls the appropriate <code>SQLOutputImpl.writeXXX</code> method(s)
405+ * for writing each of the object's attributes in order.
406+ * The attributes must be read from an <code>SQLInput</code>
407+ * input stream and written to an <code>SQLOutputImpl</code>
408+ * output stream in the same order in which they were
409+ * listed in the SQL definition of the user-defined type.
410+ *
411+ * @param x the object representing data of an SQL structured or
412+ * distinct type
413+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
414+ * use by a <code>SQLData</code> object attempting to write the attribute
415+ * values of a UDT to the database.
416+ */
417+ public void writeObject(SQLData x) throws SQLException {
418+
419+ /*
420+ * Except for the types that are passed as objects
421+ * this seems to be the only way for an object to
422+ * get a null value for a field in a structure.
423+ *
424+ * Note: this means that the class defining SQLData
425+ * will need to track if a field is SQL null for itself
426+ */
427+ if (x == null) {
428+ attribs.add(x);
429+ return;
430+ }
431+
432+ /*
433+ * We have to write out a SerialStruct that contains
434+ * the name of this class otherwise we don't know
435+ * what to re-instantiate during readSQL()
436+ */
437+ attribs.add(new SerialStruct((SQLData)x, map));
438+ }
439+
440+ /**
441+ * Writes a <code>Ref</code> object in the Java programming language
442+ * to this <code>SQLOutputImpl</code> object. The driver converts
443+ * it to a serializable <code>SerialRef</code> SQL <code>REF</code> value
444+ * before returning it to the database.
445+ *
446+ * @param x an object representing an SQL <code>REF</code> value
447+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
448+ * use by a <code>SQLData</code> object attempting to write the attribute
449+ * values of a UDT to the database.
450+ */
451+ public void writeRef(Ref x) throws SQLException {
452+ if (x == null) {
453+ attribs.add(x);
454+ return;
455+ }
456+ attribs.add(new SerialRef(x));
457+ }
458+
459+ /**
460+ * Writes a <code>Blob</code> object in the Java programming language
461+ * to this <code>SQLOutputImpl</code> object. The driver converts
462+ * it to a serializable <code>SerialBlob</code> SQL <code>BLOB</code> value
463+ * before returning it to the database.
464+ *
465+ * @param x an object representing an SQL <code>BLOB</code> value
466+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
467+ * use by a <code>SQLData</code> object attempting to write the attribute
468+ * values of a UDT to the database.
469+ */
470+ public void writeBlob(Blob x) throws SQLException {
471+ if (x == null) {
472+ attribs.add(x);
473+ return;
474+ }
475+ attribs.add(new SerialBlob(x));
476+ }
477+
478+ /**
479+ * Writes a <code>Clob</code> object in the Java programming language
480+ * to this <code>SQLOutputImpl</code> object. The driver converts
481+ * it to a serializable <code>SerialClob</code> SQL <code>CLOB</code> value
482+ * before returning it to the database.
483+ *
484+ * @param x an object representing an SQL <code>CLOB</code> value
485+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
486+ * use by a <code>SQLData</code> object attempting to write the attribute
487+ * values of a UDT to the database.
488+ */
489+ public void writeClob(Clob x) throws SQLException {
490+ if (x == null) {
491+ attribs.add(x);
492+ return;
493+ }
494+ attribs.add(new SerialClob(x));
495+ }
496+
497+ /**
498+ * Writes a <code>Struct</code> object in the Java
499+ * programming language to this <code>SQLOutputImpl</code>
500+ * object. The driver converts this value to an SQL structured type
501+ * before returning it to the database.
502+ * <P>
503+ * This method should be used when an SQL structured type has been
504+ * mapped to a <code>Struct</code> object in the Java programming
505+ * language (the standard mapping). The method
506+ * <code>writeObject</code> should be used if an SQL structured type
507+ * has been custom mapped to a class in the Java programming language.
508+ *
509+ * @param x an object representing the attributes of an SQL structured type
510+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
511+ * use by a <code>SQLData</code> object attempting to write the attribute
512+ * values of a UDT to the database.
513+ */
514+ public void writeStruct(Struct x) throws SQLException {
515+ SerialStruct s = new SerialStruct(x,map);;
516+ attribs.add(s);
517+ }
518+
519+ /**
520+ * Writes an <code>Array</code> object in the Java
521+ * programming language to this <code>SQLOutputImpl</code>
522+ * object. The driver converts this value to a serializable
523+ * <code>SerialArray</code> SQL <code>ARRAY</code>
524+ * value before returning it to the database.
525+ *
526+ * @param x an object representing an SQL <code>ARRAY</code> value
527+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
528+ * use by a <code>SQLData</code> object attempting to write the attribute
529+ * values of a UDT to the database.
530+ */
531+ public void writeArray(Array x) throws SQLException {
532+ if (x == null) {
533+ attribs.add(x);
534+ return;
535+ }
536+ attribs.add(new SerialArray(x, map));
537+ }
538+
539+ /**
540+ * Writes an <code>java.sql.Type.DATALINK</code> object in the Java
541+ * programming language to this <code>SQLOutputImpl</code> object. The
542+ * driver converts this value to a serializable <code>SerialDatalink</code>
543+ * SQL <code>DATALINK</code> value before return it to the database.
544+ *
545+ * @param url an object representing a SQL <code>DATALINK</code> value
546+ * @throws SQLException if the <code>SQLOutputImpl</code> object is in
547+ * use by a <code>SQLData</code> object attempting to write the attribute
548+ * values of a UDT to the database.
549+ */
550+ public void writeURL(java.net.URL url) throws SQLException {
551+ if (url == null) {
552+ attribs.add(url);
553+ return;
554+ }
555+ attribs.add(new SerialDatalink(url));
556+
557+ }
558+
559+
560+ /**
561+ * Writes the next attribute to the stream as a <code>String</code>
562+ * in the Java programming language. The driver converts this to a
563+ * SQL <code>NCHAR</code> or
564+ * <code>NVARCHAR</code> or <code>LONGNVARCHAR</code> value
565+ * (depending on the argument's
566+ * size relative to the driver's limits on <code>NVARCHAR</code> values)
567+ * when it sends it to the stream.
568+ *
569+ * @param x the value to pass to the database
570+ * @exception SQLException if a database access error occurs
571+ * @since 1.6
572+ */
573+ public void writeNString(String x) throws SQLException {
574+ throw new UnsupportedOperationException("Operation not supported");
575+ }
576+
577+ /**
578+ * Writes an SQL <code>NCLOB</code> value to the stream.
579+ *
580+ * @param x a <code>NClob</code> object representing data of an SQL
581+ * <code>NCLOB</code> value
582+ *
583+ * @exception SQLException if a database access error occurs
584+ * @since 1.6
585+ */
586+ public void writeNClob(NClob x) throws SQLException {
587+ throw new UnsupportedOperationException("Operation not supported");
588+ }
589+
590+
591+ /**
592+ * Writes an SQL <code>ROWID</code> value to the stream.
593+ *
594+ * @param x a <code>RowId</code> object representing data of an SQL
595+ * <code>ROWID</code> value
596+ *
597+ * @exception SQLException if a database access error occurs
598+ * @since 1.6
599+ */
600+ public void writeRowId(RowId x) throws SQLException {
601+ throw new UnsupportedOperationException("Operation not supported");
602+ }
603+
604+
605+ /**
606+ * Writes an SQL <code>XML</code> value to the stream.
607+ *
608+ * @param x a <code>SQLXML</code> object representing data of an SQL
609+ * <code>XML</code> value
610+ *
611+ * @exception SQLException if a database access error occurs
612+ * @since 1.6
613+ */
614+ public void writeSQLXML(SQLXML x) throws SQLException {
615+ throw new UnsupportedOperationException("Operation not supported");
616+ }
617+
618+}