com.langner.jmatic2
Interface IPLCValue

All Known Implementing Classes:

PLCValue

public interface IPLCValue

This interface represents the value access of a PLCAlias object.

Version:

2.0

Author:

Langner Communications AG

Copyright:

Langner (c) 2001-2005

Method Summary

byte[]	getBinary() Retrieve the data as raw binary values.
java.lang.Boolean	getBoolean() Retrieve the data as a boolean value.
java.util.Date	getDate() Retrieve the data as a Date value.
java.lang.Float	getFloat() Retrieve the data as a real value.
java.lang.Long	getLong() Retrieve the data as a long value.
java.lang.String	getString() Retrieve the data as a string.
java.lang.Long	getTime() Retrieve the data as a long value used as milliseconds.

Method Detail

getBoolean

public java.lang.Boolean getBoolean()

Retrieve the data as a boolean value. The PLCAlias object must be of type BOOLEAN.

Returns:

The value or null if the type of the alias does not match.

getLong

public java.lang.Long getLong()

Retrieve the data as a long value. The PLCAlias object must be of type BYTE, INT, DINT, WORD or DWORD.

Returns:

The value or null if the type of the alias does not match.

getFloat

public java.lang.Float getFloat()

Retrieve the data as a real value. The PLCAlias object must be of type REAL.

Returns:

The value or null if the type of the alias does not match.

getString

public java.lang.String getString()

Retrieve the data as a string. The PLCAlias object can be of any data type.

Returns:

The String value of the alias or the string representation of the value.

getDate

public java.util.Date getDate()

Retrieve the data as a Date value. The PLCAlias object must be of type PLC_DATE, PLC_TOD or PLC_DT.

Returns:

The value or null if the type of the alias does not match.

getTime

public java.lang.Long getTime()

Retrieve the data as a long value used as milliseconds. The PLCAlias object must be of type S5TIME or TIME.

Returns:

The value or null if the type of the alias does not match.

getBinary

public byte[] getBinary()

Retrieve the data as raw binary values. The PLCAlias object must be of type BINARY.

Returns:

The value or null if the type of the alias does not match.