org.oreodata.predicates
Class ClassConstraint

java.lang.Object
  |
  +--org.oreodata.predicates.ClassConstraint

All Implemented Interfaces:

RecordFilter, java.io.Serializable

public class ClassConstraint

extends java.lang.Object

implements RecordFilter

A RecordFilter type that accepts any record as long as it is of a given class.

See Also:

Serialized Form

Field Summary

java.lang.Class

clase

Constructor Summary

ClassConstraint(java.lang.Class clase)

Method Summary

boolean	accept(Record rec) Does this record meet the filter criterion?
java.lang.String	recType() says what kind of record type we are looking for, i.e.
java.lang.String	sqlEquivalent()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

clase

public final java.lang.Class clase

Constructor Detail

ClassConstraint

public ClassConstraint(java.lang.Class clase)

Method Detail

accept

public boolean accept(Record rec)

Description copied from interface: RecordFilter

Does this record meet the filter criterion?

Specified by:

accept in interface RecordFilter

sqlEquivalent

public java.lang.String sqlEquivalent()

Specified by:

sqlEquivalent in interface RecordFilter

Returns:

The SQL SELECT command that is the equivalent to this. A null value would indicate that we don't know the SQL command. In that case, the filter will have to be applied in-memory.

recType

public java.lang.String recType()

Description copied from interface: RecordFilter

says what kind of record type we are looking for, i.e. the filter will only return results of a certain record type. If this returns null, it means that we could have heterogeneous results.

Specified by:

recType in interface RecordFilter