org.csstudio.data.values.internal

Class DoubleValue

java.lang.Object

org.csstudio.data.values.internal.Value

org.csstudio.data.values.internal.DoubleValue

All Implemented Interfaces:

IDoubleValue, IValue

public class DoubleValue
extends Value
implements IDoubleValue

Implementation of IDoubleValue.

Author:

Kay Kasemir, Xihui Chen

Nested Class Summary

Nested classes/interfaces inherited from interface org.csstudio.data.values.IValue

IValue.Format

Field Summary

Fields inherited from class org.csstudio.data.values.internal.Value

MAX_FORMAT_VALUE_COUNT

Constructor Summary

Constructors

Constructor and Description
DoubleValue(ITimestamp time, ISeverity severity, String status, INumericMetaData metaData, double[] values) Constructs a new double value from pieces.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
String	format(IValue.Format how, int prec) Format the value as a string.
double	getValue()
double[]	getValues()
int	hashCode()

Methods inherited from class org.csstudio.data.values.internal.Value

format, getDisplayChar, getMetaData, getSeverity, getStatus, getTime, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.csstudio.data.values.IValue

format, getMetaData, getSeverity, getStatus, getTime

Constructor Detail

DoubleValue

public DoubleValue(ITimestamp time,
                   ISeverity severity,
                   String status,
                   INumericMetaData metaData,
                   double[] values)

Constructs a new double value from pieces.

Parameters:

time - the timestamp of the value

severity - the severity

status - the status of the value

metaData - meta information about the PV

values - the values

Method Detail

getValues

public final double[] getValues()

Specified by:

getValues in interface IDoubleValue

Returns:

Returns the whole array of values.

getValue

public final double getValue()

Specified by:

getValue in interface IDoubleValue

Returns:

Returns the first array element.

Since most values are probably scalars, this is a convenient way to get that one and only element.

See Also:

IDoubleValue.getValues()

format

public String format(IValue.Format how,
                     int prec)

Description copied from interface: IValue

Format the value as a string.

This means only the numeric or string value. Not the timestamp, not the severity and status.

Specified by:

format in interface IValue

Specified by:

format in class Value

Parameters:

how - Detail on how to format.

prec - Might be used by some format types to select for example the number of digits after the decimal point. A precision of '-1' might select the default-precision obtained from the MetaData.

Returns:

This Value's value as a string.

equals

public boolean equals(Object obj)

Overrides:

equals in class Value

hashCode

public final int hashCode()

Overrides:

hashCode in class Value