com.im.df.api.dml
Class DFTermValue

java.lang.Object
  com.im.df.api.dml.DFTerm
      com.im.df.api.dml.DFTermValue

public final class DFTermValue
extends DFTerm

This object represents a constant value in the hierarchical substructure of DFTerms, it's wrapper class around such a constant value.

It's not allowed to wrap null value. If you really want to fill null into DFTerm, then you must use your special constant non-null value (for example if the value is of type class MyType, then add public static final MyType NULL = new MyType() constant to your class and use this constant instead of null.

The object is immutable, the value cannot be changed once the object is created. Currently it doesn't have public constructor nor create method. If you want to use this object you can create using DFTermsFactory static methods.

Method Summary

void	accept(DFTermVisitor visitor)
boolean	equals(Object obj)
Class<? extends DFFieldDataTypeCapability>	getTermReturnType() This implementation always returns null as value cannot provide the type.
Object	getValue() Get the value which is wrapped by this class.
int	hashCode()
String	toString()
String	toString(DFOperator operator)

Methods inherited from class com.im.df.api.dml.DFTerm

validate

Methods inherited from class java.lang.Object

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

Method Detail

getValue

public Object getValue()

Get the value which is wrapped by this class.

Returns:

The value. Never returns null.

getTermReturnType

public Class<? extends DFFieldDataTypeCapability> getTermReturnType()

This implementation always returns null as value cannot provide the type.

Specified by:

getTermReturnType in class DFTerm

Returns:

The class which is subclass of DFFieldDataTypeCapability or null

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

toString

public String toString(DFOperator operator)

accept

public void accept(DFTermVisitor visitor)

Specified by:

accept in class DFTerm