/* Copyright (c) 2001-2018, 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.rowio;
import java.math.
BigDecimal;
import org.hsqldb.
ColumnSchema;
import org.hsqldb.
Row;
import org.hsqldb.error.
Error;
import org.hsqldb.error.
ErrorCode;
import org.hsqldb.lib.
HashMappedList;
import org.hsqldb.lib.
HsqlByteArrayOutputStream;
import org.hsqldb.types.
BinaryData;
import org.hsqldb.types.
BlobData;
import org.hsqldb.types.
ClobData;
import org.hsqldb.types.
IntervalMonthData;
import org.hsqldb.types.
IntervalSecondData;
import org.hsqldb.types.
JavaObjectData;
import org.hsqldb.types.
TimeData;
import org.hsqldb.types.
TimestampData;
import org.hsqldb.types.
Type;
import org.hsqldb.types.
Types;
/**
* Base class for writing the data for a database row in different formats.
* Defines the methods that are independent of storage format and declares
* the format-dependent methods that subclasses should define.
*
* @author Bob Preston (sqlbob@users dot sourceforge.net)
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.4.1
* @since 1.7.0
*/
abstract class
RowOutputBase extends
HsqlByteArrayOutputStream
implements
RowOutputInterface {
/**
* Constructor used for persistent storage of a Table row
*/
public
RowOutputBase() {
super();
}
/**
* Constructor used for result sets
*/
public
RowOutputBase(int
initialSize) {
super(
initialSize);
}
/**
* Constructor used for network transmission of result sets
*/
public
RowOutputBase(byte[]
buffer) {
super(
buffer);
}
protected void
writeFieldPrefix() {}
protected abstract void
writeFieldType(
Type type);
protected abstract void
writeNull(
Type type);
protected abstract void
writeChar(
String s,
Type t);
protected abstract void
writeSmallint(
Number o);
protected abstract void
writeInteger(
Number o);
protected abstract void
writeBigint(
Number o);
protected abstract void
writeReal(
Double o);
protected abstract void
writeDecimal(
BigDecimal o,
Type type);
protected abstract void
writeBoolean(
Boolean o);
protected abstract void
writeDate(
TimestampData o,
Type type);
protected abstract void
writeTime(
TimeData o,
Type type);
protected abstract void
writeTimestamp(
TimestampData o,
Type type);
protected abstract void
writeYearMonthInterval(
IntervalMonthData o,
Type type);
protected abstract void
writeDaySecondInterval(
IntervalSecondData o,
Type type);
protected abstract void
writeOther(
JavaObjectData o);
protected abstract void
writeBit(
BinaryData o);
protected abstract void
writeUUID(
BinaryData o);
protected abstract void
writeBinary(
BinaryData o);
protected abstract void
writeClob(
ClobData o,
Type type);
protected abstract void
writeBlob(
BlobData o,
Type type);
protected abstract void
writeArray(
Object[]
o,
Type type);
/**
* This method is called to write data for a table row.
*/
public void
writeData(
Row row,
Type[]
types) {
writeData(
types.length,
types,
row.
getData(), null, null);
}
/**
* This method is called directly to write data for a delete statement.
*/
public void
writeData(int
l,
Type[]
types,
Object[]
data,
HashMappedList cols, int[]
primaryKeys) {
boolean
hasPK =
primaryKeys != null &&
primaryKeys.length != 0;
int
limit =
hasPK ?
primaryKeys.length
:
l;
for (int
i = 0;
i <
limit;
i++) {
int
j =
hasPK ?
primaryKeys[
i]
:
i;
Object o =
data[
j];
Type t =
types[
j];
if (
cols != null) {
ColumnSchema col = (
ColumnSchema)
cols.
get(
j);
writeFieldPrefix();
writeString(
col.
getName().
statementName);
}
writeData(
o,
t);
}
}
public void
writeData(
Object o,
Type t) {
if (
o == null) {
writeNull(
t);
return;
}
writeFieldType(
t);
switch (
t.
typeCode) {
case
Types.
SQL_ALL_TYPES :
break;
case
Types.
SQL_CHAR :
case
Types.
SQL_VARCHAR :
writeChar((
String)
o,
t);
break;
case
Types.
TINYINT :
case
Types.
SQL_SMALLINT :
writeSmallint((
Number)
o);
break;
case
Types.
SQL_INTEGER :
writeInteger((
Number)
o);
break;
case
Types.
SQL_BIGINT :
writeBigint((
Number)
o);
break;
case
Types.
SQL_REAL :
case
Types.
SQL_FLOAT :
case
Types.
SQL_DOUBLE :
writeReal((
Double)
o);
break;
case
Types.
SQL_NUMERIC :
case
Types.
SQL_DECIMAL :
writeDecimal((
BigDecimal)
o,
t);
break;
case
Types.
SQL_BOOLEAN :
writeBoolean((
Boolean)
o);
break;
case
Types.
SQL_DATE :
writeDate((
TimestampData)
o,
t);
break;
case
Types.
SQL_TIME :
case
Types.
SQL_TIME_WITH_TIME_ZONE :
writeTime((
TimeData)
o,
t);
break;
case
Types.
SQL_TIMESTAMP :
case
Types.
SQL_TIMESTAMP_WITH_TIME_ZONE :
writeTimestamp((
TimestampData)
o,
t);
break;
case
Types.
SQL_INTERVAL_YEAR :
case
Types.
SQL_INTERVAL_YEAR_TO_MONTH :
case
Types.
SQL_INTERVAL_MONTH :
writeYearMonthInterval((
IntervalMonthData)
o,
t);
break;
case
Types.
SQL_INTERVAL_DAY :
case
Types.
SQL_INTERVAL_DAY_TO_HOUR :
case
Types.
SQL_INTERVAL_DAY_TO_MINUTE :
case
Types.
SQL_INTERVAL_DAY_TO_SECOND :
case
Types.
SQL_INTERVAL_HOUR :
case
Types.
SQL_INTERVAL_HOUR_TO_MINUTE :
case
Types.
SQL_INTERVAL_HOUR_TO_SECOND :
case
Types.
SQL_INTERVAL_MINUTE :
case
Types.
SQL_INTERVAL_MINUTE_TO_SECOND :
case
Types.
SQL_INTERVAL_SECOND :
writeDaySecondInterval((
IntervalSecondData)
o,
t);
break;
case
Types.
OTHER :
writeOther((
JavaObjectData)
o);
break;
case
Types.
SQL_BLOB :
writeBlob((
BlobData)
o,
t);
break;
case
Types.
SQL_CLOB :
writeClob((
ClobData)
o,
t);
break;
case
Types.
SQL_ARRAY :
writeArray((
Object[])
o,
t);
break;
case
Types.
SQL_GUID :
writeUUID((
BinaryData)
o);
break;
case
Types.
SQL_BINARY :
case
Types.
SQL_VARBINARY :
writeBinary((
BinaryData)
o);
break;
case
Types.
SQL_BIT :
case
Types.
SQL_BIT_VARYING :
writeBit((
BinaryData)
o);
break;
default :
throw
Error.
runtimeError(
ErrorCode.
U_S0500,
"RowOutputBase - "
+
t.
getNameString());
}
}
// returns the underlying HsqlByteArrayOutputStream
public
HsqlByteArrayOutputStream getOutputStream() {
return this;
}
public abstract
RowOutputInterface duplicate();
}