| /* Copyright (c) 2001-2010, The HSQL Development Group |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of the HSQL Development Group nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG, |
| * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| |
| package org.hsqldb.types; |
| |
| import java.io.Reader; |
| |
| import org.hsqldb.SessionInterface; |
| import org.hsqldb.error.Error; |
| import org.hsqldb.error.ErrorCode; |
| import org.hsqldb.result.Result; |
| import org.hsqldb.result.ResultLob; |
| |
| /** |
| * Implementation of CLOB for client and server.<p> |
| * |
| * @author Fred Toussi (fredt@users dot sourceforge.net) |
| * @version 1.9.0 |
| * @since 1.9.0 |
| */ |
| public class ClobDataID implements ClobData { |
| |
| long id; |
| |
| public ClobDataID(long id) { |
| this.id = id; |
| } |
| |
| public char[] getChars(SessionInterface session, long position, |
| int length) { |
| |
| ResultLob resultOut = ResultLob.newLobGetCharsRequest(id, position, |
| length); |
| Result resultIn = session.execute(resultOut); |
| |
| if (resultIn.isError()) { |
| throw resultIn.getException(); |
| } |
| |
| return ((ResultLob) resultIn).getCharArray(); |
| } |
| |
| public long length(SessionInterface session) { |
| |
| ResultLob resultOut = ResultLob.newLobGetLengthRequest(id); |
| Result resultIn = session.execute(resultOut); |
| |
| if (resultIn.isError()) { |
| throw resultIn.getException(); |
| } |
| |
| return ((ResultLob) resultIn).getBlockLength(); |
| } |
| |
| public String getSubString(SessionInterface session, long pos, |
| int length) { |
| |
| char[] chars = getChars(session, pos, length); |
| |
| return new String(chars); |
| } |
| |
| public ClobData getClob(SessionInterface session, long position, |
| long length) { |
| |
| ResultLob resultOut = ResultLob.newLobGetRequest(id, position, length); |
| Result resultIn = session.execute(resultOut); |
| |
| if (resultIn.isError()) { |
| throw resultIn.getException(); |
| } |
| |
| return new ClobDataID(((ResultLob) resultIn).getLobID()); |
| } |
| |
| public void truncate(SessionInterface session, long len) { |
| ResultLob resultOut = ResultLob.newLobTruncateRequest(id, len); |
| Result resultIn = session.execute(resultOut); |
| |
| if (resultIn.isError()) { |
| throw resultIn.getException(); |
| } |
| } |
| |
| public Reader getCharacterStream(SessionInterface session) { |
| long length = length(session); |
| return new ClobInputStream(session, this, 0, length); |
| } |
| |
| public long setCharacterStream(SessionInterface session, long pos, |
| Reader in) { |
| return 0; |
| } |
| |
| public int setString(SessionInterface session, long pos, String str) { |
| |
| ResultLob resultOut = ResultLob.newLobSetCharsRequest(id, pos, |
| str.toCharArray()); |
| Result resultIn = session.execute(resultOut); |
| |
| if (resultIn.isError()) { |
| throw resultIn.getException(); |
| } |
| |
| return str.length(); |
| } |
| |
| public int setString(SessionInterface session, long pos, String str, |
| int offset, int len) { |
| |
| if (!isInLimits(str.length(), offset, len)) { |
| throw Error.error(ErrorCode.X_22001); |
| } |
| |
| ResultLob resultOut = ResultLob.newLobSetCharsRequest(id, pos, |
| str.substring(offset, len).toCharArray()); |
| Result resultIn = session.execute(resultOut); |
| |
| if (resultIn.isError()) { |
| throw resultIn.getException(); |
| } |
| |
| return str.length(); |
| } |
| |
| public int setChars(SessionInterface session, long pos, char[] chars, |
| int offset, int len) { |
| |
| if (!isInLimits(chars.length, offset, len)) { |
| throw Error.error(ErrorCode.X_22001); |
| } |
| |
| char[] newChars = new char[len]; |
| |
| System.arraycopy(chars, offset, newChars, 0, len); |
| |
| ResultLob resultOut = ResultLob.newLobSetCharsRequest(id, pos, chars); |
| Result resultIn = session.execute(resultOut); |
| |
| if (resultIn.isError()) { |
| throw resultIn.getException(); |
| } |
| |
| return len; |
| } |
| |
| public long position(SessionInterface session, String searchstr, |
| long start) { |
| |
| ResultLob resultOut = ResultLob.newLobGetCharPatternPositionRequest(id, |
| searchstr.toCharArray(), start); |
| Result resultIn = session.execute(resultOut); |
| |
| if (resultIn.isError()) { |
| throw resultIn.getException(); |
| } |
| |
| return ((ResultLob) resultIn).getOffset(); |
| } |
| |
| public long position(SessionInterface session, ClobData searchstr, |
| long start) { |
| return 0L; |
| } |
| |
| public long nonSpaceLength(SessionInterface session) { |
| return 0; |
| } |
| |
| public Reader getCharacterStream(SessionInterface session, long pos, |
| long length) { |
| return new ClobInputStream(session, this, pos, length); |
| } |
| |
| public long getId() { |
| return id; |
| } |
| |
| public void setId(long id) { |
| this.id = id; |
| } |
| |
| public long getRightTrimSize(SessionInterface session) { |
| return 0; |
| } |
| |
| static boolean isInLimits(long fullLength, long pos, long len) { |
| return pos >= 0 && len >= 0 && pos + len <= fullLength; |
| } |
| |
| public void setSession(SessionInterface session) {} |
| |
| public boolean isBinary() { |
| return false; |
| } |
| } |