/* Copyright (c) 2001-2011, 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
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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package org.hsqldb.types;
import org.hsqldb.OpTypes;
import org.hsqldb.Session;
import org.hsqldb.SessionInterface;
import org.hsqldb.Tokens;
import org.hsqldb.error.Error;
import org.hsqldb.error.ErrorCode;
import org.hsqldb.jdbc.JDBCClobClient;
/**
* Type object for CLOB.<p>
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.3.0
* @since 1.9.0
*/
public final class ClobType extends CharacterType {
public static final long maxClobPrecision = 1024L * 1024 * 1024 * 1024;
public static final int defaultClobSize = 1024 * 1024 * 1024;
public static final int defaultShortClobSize = 16 * 1024 * 1024;
public ClobType(long precision) {
super(Types.SQL_CLOB, precision);
}
public int displaySize() {
return precision > Integer.MAX_VALUE ? Integer.MAX_VALUE
: (int) precision;
}
public int getJDBCTypeCode() {
return Types.CLOB;
}
public Class getJDBCClass() {
return java.sql.Clob.class;
}
public String getJDBCClassName() {
return "java.sql.Clob";
}
public int getSQLGenericTypeCode() {
return typeCode;
}
public String getDefinition() {
long factor = precision;
String multiplier = null;
if (precision % (1024) == 0) {
if (precision % (1024 * 1024 * 1024) == 0) {
factor = precision / (1024 * 1024 * 1024);
multiplier = Tokens.T_G_FACTOR;
} else if (precision % (1024 * 1024) == 0) {
factor = precision / (1024 * 1024);
multiplier = Tokens.T_M_FACTOR;
} else {
factor = precision / (1024);
multiplier = Tokens.T_K_FACTOR;
}
}
StringBuffer sb = new StringBuffer(16);
sb.append(getNameString());
sb.append('(');
sb.append(factor);
if (multiplier != null) {
sb.append(multiplier);
}
sb.append(')');
return sb.toString();
}
public long getMaxPrecision() {
return maxClobPrecision;
}
public boolean isLobType() {
return true;
}
/** @todo - collation comparison */
public int compare(Session session, Object a, Object b) {
return compare(session, a, b, OpTypes.EQUAL);
}
public int compare(Session session, Object a, Object b, int opType) {
if (a == b) {
return 0;
}
if (a == null) {
return -1;
}
if (b == null) {
return 1;
}
if (b instanceof String) {
return session.database.lobManager.compare(collation,
(ClobData) a, (String) b);
}
return session.database.lobManager.compare(collation, (ClobData) a,
(ClobData) b);
}
public Object convertToDefaultType(SessionInterface session, Object a) {
if (a == null) {
return null;
}
if (a instanceof ClobData) {
return a;
}
if (a instanceof String) {
ClobData clob = session.createClob(((String) a).length());
clob.setString(session, 0, (String) a);
return clob;
}
throw Error.error(ErrorCode.X_42561);
}
public String convertToString(Object a) {
if (a == null) {
return null;
}
return Long.toString(((ClobData) a).getId());
}
public String convertToSQLString(Object a) {
if (a == null) {
return Tokens.T_NULL;
}
return convertToString(a);
}
public Object convertJavaToSQL(SessionInterface session, Object a) {
if (a == null) {
return null;
}
if (a instanceof JDBCClobClient) {
return ((JDBCClobClient) a).getClob();
}
throw Error.error(ErrorCode.X_42561);
}
public Object convertSQLToJava(SessionInterface session, Object a) {
if (a == null) {
return null;
}
if (a instanceof ClobDataID) {
ClobDataID clob = (ClobDataID) a;
return new JDBCClobClient(session, clob);
}
throw Error.error(ErrorCode.X_42561);
}
public long position(SessionInterface session, Object data,
Object otherData, Type otherType, long start) {
if (otherType.typeCode == Types.SQL_CLOB) {
return ((ClobData) data).position(session, (ClobData) otherData,
start);
} else if (otherType.isCharacterType()) {
return ((ClobData) data).position(session, (String) otherData,
start);
} else {
throw Error.runtimeError(ErrorCode.U_S0500, "ClobType");
}
}
}