/* Copyright (c) 2001-2009, 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;
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.types;
import org.hsqldb.Error;
import org.hsqldb.ErrorCode;
import org.hsqldb.SessionInterface;
import org.hsqldb.Tokens;
import org.hsqldb.Types;
import org.hsqldb.lib.StringConverter;
public final class BlobType extends BinaryType {
public static final long maxBlobPrecision = 1024L * 1024 * 1024 * 1024;
public static final int defaultBlobSize = 1024 * 1024 * 16;
public BlobType() {
super(Types.SQL_BLOB, defaultBlobSize);
}
public BlobType(long precision) {
super(Types.SQL_BLOB, precision);
}
public int displaySize() {
return precision > Integer.MAX_VALUE ? Integer.MAX_VALUE
: (int) precision;
}
public int getJDBCTypeCode() {
return Types.BLOB;
}
public String getJDBCClassName() {
return "java.sql.Blob";
}
public String getNameString() {
return Tokens.T_BLOB;
}
public String getFullNameString() {
return "BINARY LARGE OBJECT";
}
public String getDefinition() {
long factor = precision;
String multiplier = null;
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 if (precision % (1024) == 0) {
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 boolean isBinaryType() {
return true;
}
public boolean isLobType() {
return true;
}
/** @todo implement comparison */
public int compare(Object a, Object b) {
if (a == b) {
return 0;
}
if (a == null) {
return -1;
}
if (b == null) {
return 1;
}
long aId = ((BlobData) a).getId();
long bId = ((BlobData) b).getId();
return (aId > bId) ? 1
: (bId > aId ? -1
: 0);
}
/** @todo - implement */
public Object convertToTypeLimits(SessionInterface session, Object a) {
return a;
}
public Object convertToType(SessionInterface session, Object a,
Type otherType) {
if (a == null) {
return null;
}
if (otherType.typeCode == Types.SQL_BLOB) {
return a;
}
if (otherType.typeCode == Types.SQL_BINARY
|| otherType.typeCode == Types.SQL_VARBINARY) {
return new BinaryData(((BinaryData) a).data, false);
}
throw Error.error(ErrorCode.X_42561);
}
public Object convertToDefaultType(SessionInterface session, Object a) {
if (a == null) {
return a;
}
// conversion to Blob via PreparedStatement.setObject();
if (a instanceof byte[]) {
return new BinaryData((byte[]) a, false);
}
throw Error.error(ErrorCode.X_42561);
}
public String convertToString(Object a) {
if (a == null) {
return null;
}
byte[] bytes = ((BlobData) a).getBytes();
return StringConverter.byteArrayToHexString(bytes);
}
public String convertToSQLString(Object a) {
if (a == null) {
return "NULL";
}
byte[] bytes = ((BlobData) a).getBytes();
return StringConverter.byteArrayToSQLHexString(bytes);
}
}