src.com.ibm.as400.access.AS400Float8 Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jt400 Show documentation
Show all versions of jt400 Show documentation
The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: AS400Float8.java
//
// The source code contained herein is licensed under the IBM Public License
// Version 1.0, which has been approved by the Open Source Initiative.
// Copyright (C) 1997-2004 International Business Machines Corporation and
// others. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////
package com.ibm.as400.access;
/**
* The AS400Float8 class provides a converter between a Double object and a eight-byte floating point number.
**/
public class AS400Float8 implements AS400DataType
{
static final long serialVersionUID = 4L;
private static final int SIZE = 8;
private static final double defaultValue = 0.0;
/**
* Constructs an AS400Float8 object.
*/
public AS400Float8()
{
}
/**
* Creates a new AS400Float8 object that is identical to the current instance.
* @return The new object.
**/
public Object clone()
{
try
{
return super.clone(); // Object.clone does not throw exception
}
catch (CloneNotSupportedException e)
{
Trace.log(Trace.ERROR, "Unexpected cloning error", e);
throw new InternalErrorException(InternalErrorException.UNKNOWN, e);
}
}
/**
* Returns the byte length of the data type.
* @return Eight (8), the number of bytes in the IBM i representation of the data type.
**/
public int getByteLength()
{
return SIZE;
}
/**
* Returns a Java object representing the default value of the data type.
* @return The Double object with a value of zero.
**/
public Object getDefaultValue()
{
return new Double(defaultValue);
}
/**
* Returns {@link com.ibm.as400.access.AS400DataType#TYPE_FLOAT8 TYPE_FLOAT8}.
* @return AS400DataType.TYPE_FLOAT8.
**/
public int getInstanceType()
{
return AS400DataType.TYPE_FLOAT8;
}
/**
* Returns the Java class that corresponds with this data type.
* @return Double.class.
**/
public Class getJavaType()
{
return Double.class;
}
/**
* Converts the specified Java object to IBM i format.
* @param javaValue The object corresponding to the data type. It must be an instance of Double.
* @return The IBM i representation of the data type.
**/
public byte[] toBytes(Object javaValue)
{
byte[] as400Value = new byte[SIZE];
BinaryConverter.doubleToByteArray(((Double)javaValue).doubleValue(), as400Value, 0); // Allow this line to throw ClassCastException and NullPointerException
return as400Value;
}
/**
* Converts the specified double to IBM i format.
* @param doubleValue The value to be converted to IBM i format.
* @return The IBM i representation of the data type.
**/
public byte[] toBytes(double doubleValue)
{
byte[] as400Value = new byte[SIZE];
BinaryConverter.doubleToByteArray(doubleValue, as400Value, 0);
return as400Value;
}
/**
* Converts the specified Java object into IBM i format in the specified byte array.
* @param javaValue The object corresponding to the data type. It must be an instance of Double.
* @param as400Value The array to receive the data type in IBM i format. There must be enough space to hold the IBM i value.
* @return Eight (8), the number of bytes in the IBM i representation of the data type.
**/
public int toBytes(Object javaValue, byte[] as400Value)
{
// BinaryConverter will throw the ArrayIndexException's
BinaryConverter.doubleToByteArray(((Double)javaValue).doubleValue(), as400Value, 0); // Allow this line to throw ClassCastException and NullPointerException
return SIZE;
}
/**
* Converts the specified double into IBM i format in the specified byte array.
* @param doubleValue The value to be converted to IBM i format.
* @param as400Value The array to receive the data type in IBM i format. There must be enough space to hold the IBM i value.
* @return Eight (8), the number of bytes in the IBM i representation of the data type.
**/
public int toBytes(double doubleValue, byte[] as400Value)
{
// BinaryConverter will throw the ArrayIndexException's
BinaryConverter.doubleToByteArray(doubleValue, as400Value, 0);
return SIZE;
}
/**
* Converts the specified Java object into IBM i format in the specified byte array.
* @param javaValue The object corresponding to the data type. It must be an instance of Double.
* @param as400Value The array to receive the data type in IBM i format. There must be enough space to hold the IBM i value.
* @param offset The offset into the byte array for the start of the IBM i value. It must be greater than or equal to zero.
* @return Eight(8), the number of bytes in the IBM i representation of the data type.
**/
public int toBytes(Object javaValue, byte[] as400Value, int offset)
{
// BinaryConverter will throw the ArrayIndexException's
BinaryConverter.doubleToByteArray(((Double)javaValue).doubleValue(), as400Value, offset); // Allow this line to throw ClassCastException and NullPointerException
return SIZE;
}
/**
* Converts the specified double into IBM i format in the specified byte array.
* @param doubleValue The value to be converted to IBM i format.
* @param as400Value The array to receive the data type in IBM i format. There must be enough space to hold the IBM i value.
* @param offset The offset into the byte array for the start of the IBM i value. It must be greater than or equal to zero.
* @return Eight (8), the number of bytes in the IBM i representation of the data type.
**/
public int toBytes(double doubleValue, byte[] as400Value, int offset)
{
// BinaryConverter will throw the ArrayIndexException's
BinaryConverter.doubleToByteArray(doubleValue, as400Value, offset);
return SIZE;
}
/**
* Converts the specified IBM i data type to a double.
* @param as400Value The array containing the data type in IBM i format. The entire data type must be represented.
* @return The double corresponding to the data type.
**/
public double toDouble(byte[] as400Value)
{
// BinaryConverter will throw the ArrayIndexException's
return BinaryConverter.byteArrayToDouble(as400Value, 0);
}
/**
* Converts the specified IBM i data type to a double.
* @param as400Value The array containing the data type in IBM i format. The entire data type must be represented.
* @param offset The offset into the byte array for the start of the IBM i value. It must be greater than or equal to zero.
* @return The double corresponding to the data type.
**/
public double toDouble(byte[] as400Value, int offset)
{
// BinaryConverter will throw the ArrayIndexException's
return BinaryConverter.byteArrayToDouble(as400Value, offset);
}
/**
* Converts the specified IBM i data type to a Java object.
* @param as400Value The array containing the data type in IBM i format. The entire data type must be represented.
* @return The Double object corresponding to the data type.
**/
public Object toObject(byte[] as400Value)
{
// BinaryConverter will throw the ArrayIndexException's
return new Double(BinaryConverter.byteArrayToDouble(as400Value, 0));
}
/**
* Converts the specified IBM i data type to a Java object.
* @param as400Value the array containing the data type in IBM i format. The entire data type must be represented.
* @param offset The offset into the byte array for the start of the IBM i value. It must be greater than or equal to zero.
* @return The Double object corresponding to the data type.
**/
public Object toObject(byte[] as400Value, int offset)
{
// BinaryConverter will throw the ArrayIndexException's
return new Double(BinaryConverter.byteArrayToDouble(as400Value, offset));
}
}