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edu.udo.cs.miningmart.m4.core
Class Projection

java.lang.Object
  extended by edu.udo.cs.miningmart.m4.core.M4Object
      extended by edu.udo.cs.miningmart.m4.core.M4Data
          extended by edu.udo.cs.miningmart.m4.core.Projection
All Implemented Interfaces:
M4Data, M4Object, Projection, M4Table, XmlInfo, java.io.Serializable, java.lang.Comparable
public class Projection
extends M4Data
implements XmlInfo, Projection

Version:
$Id: Projection.java,v 1.6 2006/09/27 14:59:59 euler Exp $
Author:
Martin Scholz
See Also:
Serialized Form

Field Summary
static java.lang.String ATTRIB_FROM_CONCEPT
          db level: name of the attribute specifying the from-concept's id
static java.lang.String ATTRIB_PROJECTION_ID
          db level: name of the attribute specifying the projection's id
static java.lang.String ATTRIB_TO_CONCEPT
          db level: name of the attribute specifying the to-concept's id
static java.lang.String M4_TABLE_NAME
          The name of the corresponding M4 table.
static M4Info m4Info
          Cache for getM4Info()
 
Fields inherited from class edu.udo.cs.miningmart.m4.core.M4Data
myDocumentation
 
Fields inherited from class edu.udo.cs.miningmart.m4.core.M4Object
myId, myName
 
Fields inherited from interface edu.udo.cs.miningmart.m4.utils.XmlInfo
M4_XML_VERSION, TAG_COLLECTION, TAG_DOUBLE, TAG_INTEGER, TAG_LONG, TAG_M4_ID, TAG_SHORT, TAG_STRING, TAG_XML_ID
 
Fields inherited from interface edu.udo.cs.miningmart.m4.utils.M4Table
NOT_NULL
 
Constructor Summary
Projection(DB db)
           
 
Method Summary
 Concept getFromConcept()
          Getter method.
 java.lang.String getIdAttributeName()
           
 M4Info getM4Info()
           
 java.lang.String getM4TableName()
           
protected  java.util.Collection getObjectsInNamespace(java.lang.Class typeOfObjects)
          This method returns the objects of the specified type that form a namespace in the scope of this M4Data object.
 Concept getToConcept()
          Getter method.
 M4Info getXmlInfo()
           
 boolean isValid()
          For a valid projection, the From concept must have all the features of the To concept (correspondence is determined by name), and can have more.
 void primitiveSetFromConcept(Concept fromConcept)
          Primitive setter, do not use it!
 void primitiveSetToConcept(Concept toConcept)
          Primitive setter, do not use it!
 void print()
          Print this M4 object's parameters.
protected  void removeAllM4References()
          This method needs to be implemented by all M4Data objects.
 void setFromConcept(Concept fromConcept)
          Setter method for the From-Concept of this Projection
 void setToConcept(Concept toConcept)
          Setter method for the To-Concept of this Projection
 
Methods inherited from class edu.udo.cs.miningmart.m4.core.M4Data
deleteLocal, deleteSoon, exportLocal, genericGetter, genericSetter, getDependentObjects, getDocumentation, getObjectsReferencingMe, getObjectsReferencingMe, getObjectTag, getUniqueName, getValidName, getValidName, getXmlIdTag, getXmlVersion, hasDeleteStatus, importLocal, isDirty, isWaitingForDelete, primitiveGetDocObject, primitiveSetDocObject, readFromDb, readFromDbLocal, removeDocObject, removeFromDb, removeSetFromDb, setDirty, setDocumentation, setId, setName, storeLocal, updateObjectsFromTable
 
Methods inherited from class edu.udo.cs.miningmart.m4.core.M4Object
compareTo, doPrint, doPrint, equals, executeBusinessSingleValueSqlRead, executeBusinessSingleValueSqlReadL, executeBusinessSqlRead, executeBusinessSqlWrite, executeM4SingleValueSqlRead, executeM4SingleValueSqlReadL, executeM4SqlRead, executeM4SqlWrite, getCasePrintObject, getId, getM4Db, getM4ObjectFromCache, getName, getNextM4SequenceValue, isNew, load, putM4ObjectToCache, replaceSpacesInName, setNotNew
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface edu.udo.cs.miningmart.m4.utils.XmlInfo
doPrint, doPrint, exportLocal, genericGetter, genericSetter, getDependentObjects, getObjectTag, getXmlIdTag, getXmlVersion, importLocal
 
Methods inherited from interface edu.udo.cs.miningmart.m4.M4Data
deleteSoon, getDocumentation, getValidName, isDirty, isWaitingForDelete, setDocumentation
 
Methods inherited from interface edu.udo.cs.miningmart.m4.M4Object
doPrint, doPrint, equals, executeBusinessSingleValueSqlRead, executeBusinessSingleValueSqlReadL, executeBusinessSqlRead, executeBusinessSqlWrite, executeM4SingleValueSqlRead, executeM4SingleValueSqlReadL, executeM4SqlRead, executeM4SqlWrite, getCasePrintObject, getId, getM4Db, getM4ObjectFromCache, getName, getNextM4SequenceValue, isNew, load, putM4ObjectToCache, replaceSpacesInName, setId, setName, setNotNew
 

Field Detail

M4_TABLE_NAME

public static final java.lang.String M4_TABLE_NAME
The name of the corresponding M4 table.

See Also:
Constant Field Values

ATTRIB_PROJECTION_ID

public static final java.lang.String ATTRIB_PROJECTION_ID
db level: name of the attribute specifying the projection's id

See Also:
Constant Field Values

ATTRIB_FROM_CONCEPT

public static final java.lang.String ATTRIB_FROM_CONCEPT
db level: name of the attribute specifying the from-concept's id

See Also:
Constant Field Values

ATTRIB_TO_CONCEPT

public static final java.lang.String ATTRIB_TO_CONCEPT
db level: name of the attribute specifying the to-concept's id

See Also:
Constant Field Values

m4Info

public static M4Info m4Info
Cache for getM4Info()

Constructor Detail

Projection

public Projection(DB db)
Method Detail

getM4TableName

public java.lang.String getM4TableName()
Specified by:
getM4TableName in interface M4Table
See Also:
M4Table.getM4TableName()

getIdAttributeName

public java.lang.String getIdAttributeName()
Specified by:
getIdAttributeName in interface M4Table
See Also:
M4Table.getIdAttributeName()

getM4Info

public M4Info getM4Info()
Specified by:
getM4Info in interface M4Table
See Also:
M4Table.getM4Info()

getXmlInfo

public M4Info getXmlInfo()
Specified by:
getXmlInfo in interface XmlInfo
Returns:
a M4Info object with the information of all XML fields of this object.
See Also:
XmlInfo.getXmlInfo()

print

public void print()
Description copied from class: M4Object
Print this M4 object's parameters. Must be implemented by all subclasses.

Specified by:
print in interface M4Object
Specified by:
print in class M4Object
See Also:
M4Object.print()

getObjectsInNamespace

protected java.util.Collection getObjectsInNamespace(java.lang.Class typeOfObjects)
                                              throws M4Exception
Description copied from class: M4Data
This method returns the objects of the specified type that form a namespace in the scope of this M4Data object. For example, a Concept's namespace for the type BaseAttribute is the Collection of all BaseAttributes for this Concept. Many M4Data objects never have a namespace, they return null. If a namespace could exist but doesn't, an empty Collection is returned.

Specified by:
getObjectsInNamespace in class M4Data
Parameters:
typeOfObjects - the type of objects that form the namespace
Returns:
a Collection of objects of type typeOfObjects, or null.
Throws:
M4Exception
See Also:
M4Data.getObjectsInNamespace(Class)

getFromConcept

public Concept getFromConcept()
Getter method.

Specified by:
getFromConcept in interface Projection
Returns:
the Concept stored as the From-Concept in this Projection

getToConcept

public Concept getToConcept()
Getter method.

Specified by:
getToConcept in interface Projection
Returns:
the Concept stored as the To-Concept in this Projection

setFromConcept

public void setFromConcept(Concept fromConcept)
                    throws M4Exception
Setter method for the From-Concept of this Projection

Specified by:
setFromConcept in interface Projection
Parameters:
fromConcept - the Concept to be set as the new From-Concept
Throws:
M4Exception

setToConcept

public void setToConcept(Concept toConcept)
                  throws M4Exception
Setter method for the To-Concept of this Projection

Specified by:
setToConcept in interface Projection
Parameters:
toConcept - the Concept to be set as the new To-Concept
Throws:
M4Exception

primitiveSetFromConcept

public void primitiveSetFromConcept(Concept fromConcept)
Primitive setter, do not use it!

Parameters:
fromConcept - the new From-Concept to be set

primitiveSetToConcept

public void primitiveSetToConcept(Concept toConcept)
Primitive setter, do not use it!

Parameters:
fromConcept - the new From-Concept to be set

removeAllM4References

protected void removeAllM4References()
                              throws M4Exception
Description copied from class: M4Data
This method needs to be implemented by all M4Data objects. It has to remove all references to other M4Objects.

Specified by:
removeAllM4References in class M4Data
Throws:
M4Exception
See Also:
M4Data.removeAllM4References()

isValid

public boolean isValid()
                throws M4Exception
For a valid projection, the From concept must have all the features of the To concept (correspondence is determined by name), and can have more.

Specified by:
isValid in interface Projection
Returns:
TRUE iff this projection represents a valid projection (feature selection) from the from concept to the to concept.
Throws:
M4Exception
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