com.reportmill.datasource
Class RMDatum

java.lang.Object
  com.reportmill.datasource.RMDatum

Direct Known Subclasses:

RMDataSet, RMJDBCDatum

public class RMDatum
extends java.lang.Object

This class is an abstract representation of a data bearing object, with the ability to get and set values by key. By using this class, you can make changes to an object such that the originating datasource knows about the changes and can save them back to a backing store. A subclass of this object might be RMDataSet that might represent a list of data.

Constructor Summary

RMDatum(java.lang.Object anObj, RMDataSource aDataSource, RMEntity anEntity, RMDatum aParent, java.lang.String aKey)
Creates a new datum for given object.

Method Summary

RMDataSet	getDataSet(java.lang.String aKey) Returns a dataset for given key (or null if key doesn't evaluate to list).
RMDataSource	getDataSource() Returns the originating datasource for this datum.
RMDatum	getDatum(java.lang.String aKey) Returns a datum for this given key.
RMEntity	getEntity() Returns the entity class this datum represents.
java.lang.String	getKey() Returns the key this datum was derived with (from parent).
java.lang.Object	getObject() Returns the object that this datum represents.
RMDatum	getParent() Returns the parent this datum was derived from.
RMProperty	getProperty(java.lang.String aKey) Returns the property description for a key.
java.lang.String	getPropertyType(java.lang.String aKey) Returns the property type for a given key.
java.lang.Object	getValue(java.lang.String aKey) Returns a value for given key.
void	setValue(java.lang.String aKey, java.lang.Object aValue) Sets a value for given key.
java.lang.Object	valueForKey(java.lang.String aKey) Same as getValue()

Methods inherited from class java.lang.Object

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

Constructor Detail

RMDatum

public RMDatum(java.lang.Object anObj,
               RMDataSource aDataSource,
               RMEntity anEntity,
               RMDatum aParent,
               java.lang.String aKey)

Creates a new datum for given object.

Method Detail

getObject

public java.lang.Object getObject()

Returns the object that this datum represents.

getDataSource

public RMDataSource getDataSource()

Returns the originating datasource for this datum.

getParent

public RMDatum getParent()

Returns the parent this datum was derived from.

getKey

public java.lang.String getKey()

Returns the key this datum was derived with (from parent).

getEntity

public RMEntity getEntity()

Returns the entity class this datum represents.

getDatum

public RMDatum getDatum(java.lang.String aKey)

Returns a datum for this given key.

getDataSet

public RMDataSet getDataSet(java.lang.String aKey)

Returns a dataset for given key (or null if key doesn't evaluate to list).

getValue

public java.lang.Object getValue(java.lang.String aKey)

Returns a value for given key.

valueForKey

public java.lang.Object valueForKey(java.lang.String aKey)

Same as getValue()

setValue

public void setValue(java.lang.String aKey,
                     java.lang.Object aValue)

Sets a value for given key.

getProperty

public RMProperty getProperty(java.lang.String aKey)

Returns the property description for a key.

getPropertyType

public java.lang.String getPropertyType(java.lang.String aKey)

Returns the property type for a given key.