de.esprit.appsuite.nio.binary

Class DoubleBufferWrapper

java.lang.Object

de.esprit.common.util.DumpableObject

de.esprit.common.log.SimpleLogSupportAdapter

de.esprit.appsuite.nio.binary.ByteBufferWrapper

de.esprit.appsuite.nio.binary.NumberBufferWrapper

de.esprit.appsuite.nio.binary.DoubleBufferWrapper

All Implemented Interfaces:

BinaryDataStructure, SimpleLogSupport, Dumpable, Resettable

public class DoubleBufferWrapper
extends NumberBufferWrapper

This buffer wrapper reads one or more double values. Note that fetching a value by index reads a single value only rather than loading the whole buffer.

Author:

Rainer Buesch

Constructor Summary

Constructors

Constructor and Description
DoubleBufferWrapper(java.lang.String name, BinaryChannel binaryChannel)
DoubleBufferWrapper(java.lang.String name, BinaryChannel binaryChannel, int numberOfValues)

Method Summary

Methods

Modifier and Type	Method and Description
protected NumberBufferWrapper	createSingleValueBufferWrapper()
protected java.nio.DoubleBuffer	getDoubleBuffer()
double	getDoubleValue()
double	getDoubleValue(int index)
double	getValue()
double	getValue(int index) Returns the value at the given index.
double[]	getValues() Loads all values into the buffer and returns them as an array.
void	reset() Clears the internal cache and forces the data to be re-read again on the next access.

Methods inherited from class de.esprit.appsuite.nio.binary.NumberBufferWrapper

getSingleValueBufferWrapper

Methods inherited from class de.esprit.appsuite.nio.binary.ByteBufferWrapper

getBinaryChannel, getByteBuffer, getByteOrder, getCapacity, getData, getEndPosition, getJavaDataType, getName, getNumberOfValues, getPredecessor, getReadOffset, getSize, getStartPosition, read, setPredecessor, setReadOffset

Methods inherited from class de.esprit.common.log.SimpleLogSupportAdapter

getLogChannel, isLogDebug, isLogVerbose, logDebug, logDump, logError, logError, logFatal, logInfo, logVerbose, logWarning, setLogChannel

Methods inherited from class de.esprit.common.util.DumpableObject

configureDumpHeadlineLength, configureDumpMaxElementsPrinted, copyDumpStringValues, copyToStringValues, createDumpHeader, toDumpString, toDumpString, toString, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DoubleBufferWrapper

public DoubleBufferWrapper(java.lang.String name,
                   BinaryChannel binaryChannel)

DoubleBufferWrapper

public DoubleBufferWrapper(java.lang.String name,
                   BinaryChannel binaryChannel,
                   int numberOfValues)

Method Detail

getDoubleBuffer

protected final java.nio.DoubleBuffer getDoubleBuffer()
                                               throws java.io.IOException

Throws:

java.io.IOException

getValue

public final double getValue()
                      throws java.io.IOException

Throws:

java.io.IOException

getValues

public final double[] getValues()
                         throws java.io.IOException

Loads all values into the buffer and returns them as an array. The array is cached internally until reset() is called.

Throws:

java.io.IOException

getValue

public final double getValue(int index)
                      throws java.io.IOException

Returns the value at the given index. Note that this method is tuned to load only a single value at the given index rather than loading the whole buffer. Thus fetching all values by index may be inefficient. Consider to use getValues() instead.

Throws:

java.io.IOException

getDoubleValue

public double getDoubleValue()
                      throws java.io.IOException

Specified by:

getDoubleValue in class NumberBufferWrapper

Throws:

java.io.IOException

getDoubleValue

public double getDoubleValue(int index)
                      throws java.io.IOException

Specified by:

getDoubleValue in class NumberBufferWrapper

Throws:

java.io.IOException

createSingleValueBufferWrapper

protected NumberBufferWrapper createSingleValueBufferWrapper()

Specified by:

createSingleValueBufferWrapper in class NumberBufferWrapper

reset

public void reset()

Description copied from class: ByteBufferWrapper

Clears the internal cache and forces the data to be re-read again on the next access.

Specified by:

reset in interface Resettable

Overrides:

reset in class NumberBufferWrapper