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java.lang.Object y.util.DataProviderAdapter
public abstract class DataProviderAdapter
An abstract adapter class for providing data. The data provision methods
in this class throw a UnsupportedOperationException
and
defined(Object)
always returns false
.
This class exists as a convenience for creating data provider objects.
Extend this class to provide either typed or untyped data for a certain lookup domain.
Constructor Summary | |
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DataProviderAdapter()
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Method Summary | |
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boolean |
defined(Object dataHolder)
Returns false for all data holders. |
Object |
get(Object dataHolder)
Subclasses may override this method to provide access to object values. |
boolean |
getBool(Object dataHolder)
Subclasses may override this method to provide access to boolean values. |
double |
getDouble(Object dataHolder)
Subclasses may override this method to provide access to double values. |
int |
getInt(Object dataHolder)
Subclasses may override this method to provide access to integer values. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public DataProviderAdapter()
Method Detail |
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public Object get(Object dataHolder)
get
in interface DataProvider
UnsupportedOperationException
- unless overwritten.public int getInt(Object dataHolder)
getInt
in interface DataProvider
UnsupportedOperationException
- unless overwritten.public double getDouble(Object dataHolder)
getDouble
in interface DataProvider
UnsupportedOperationException
- unless overwritten.public boolean getBool(Object dataHolder)
getBool
in interface DataProvider
UnsupportedOperationException
- unless overwritten.public boolean defined(Object dataHolder)
false
for all data holders. Subclasses
should override this method to make clear for which data holders
there is a value accessible via this data provider.
false
.
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