Package com.progress.open4gl
Class Holder
java.lang.Object
com.progress.open4gl.Holder
- All Implemented Interfaces:
Serializable
- Direct Known Subclasses:
BigDecimalArrayHolder
,BigDecimalHolder
,BooleanArrayHolder
,BooleanHolder
,ByteArrayArrayHolder
,ByteArrayHolder
,COMHandleArrayHolder
,COMHandleHolder
,DateArrayHolder
,DateHolder
,HandleArrayHolder
,HandleHolder
,IntArrayHolder
,IntHolder
,LongArrayHolder
,LongHolder
,MemptrArrayHolder
,MemptrHolder
,ProDataGraphHolder
,ResultSetHolder
,RowidArrayHolder
,RowidHolder
,StringArrayHolder
,StringHolder
The Holder class is the super class for all the different holder classes.
Holder objects are used to pass OUTPUT and INPUT-OUTPUT values from Java to
the 4GL through proxy methods (since the Java language does not support
output parameters). There is one holder class for each 4GL data type. Null
values correspond to the 4GL UNKNOWN value.
- See Also:
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Constructor Summary
Constructors -
Method Summary
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Constructor Details
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Holder
public Holder() -
Holder
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Method Details
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setValue
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getValue
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isNull
public boolean isNull()
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