nesstar.api
Class AType

java.lang.Object
  java.util.Observable
      nesstar.rdf.RDFObject
          nesstar.rdf.RDFClass
              nesstar.api.AType

All Implemented Interfaces:

Comparable, Type, RDFObj

Direct Known Subclasses:

BooleanType, CollectionType, FileType, StringType, VoidType

public abstract class AType
extends RDFClass

A Type, for example String or Integer, used to indicate

Created:

26 April 2002

Field Summary

Fields inherited from class nesstar.rdf.RDFObject

COLSEP, IS_GETTER, IS_PART, IS_PART_OF, WRITE_OP

Fields inherited from interface nesstar.api.Type

GET_FORM, NO_FORM, POST_DATA_FORM, POST_FORM

Constructor Summary

AType(RDFDB db, URL id)
Constructor for the Type object

Method Summary

String	getDefaultValue()
abstract String	getFormType() Return the type for the HTML input form field.
String	getJavaSimpleType()
abstract String	getJavaType()
String	getStringToTypeOp()
abstract Object	getValue(NSParameter parameter, Parameters user) Read a value of the given type from the parameters
abstract int	needsFormType()

Methods inherited from class nesstar.rdf.RDFClass

getAllMethods, getAllProperties, getMethod, getMethods, getProperties, getProperty, getRDFClass, getRDFClass, getSuperClass, getSuperClassRef, init, isAssignableFrom, isSubclassOf, toString

Methods inherited from class nesstar.rdf.RDFObject

AddProperty, AddStringProperty, chkFinal, clear, compareTo, dbg, equals, err, err, get_comment, get_creationDate, get_label, get, getAccessCondition, getBinding, getBindings, getBookmarkLabel, getCollectionURL, getComment, getCreationDate, getDB, getDescriptor, getDescriptor, getDomain, getGetterMethods, getID, getInitialisedProperties, getInternalID, getLabel, getLastClear, getPartsDescriptor, getPartsDescriptor, getPartsDescriptor, getPath, GetProperties, GetProperty, GetPropertyStatement, GetPropertyStatements, getRange, getRangeType, getRef, getRef, getServer, getShortId, getShortID, getStatementHome, GetStringProperties, GetStringProperty, getTimeoutInSecs, getType, init, init, initialised, isComplete, isLocal, isMeta, isStale, loaded, neededCollectionReload, neededReload, neededReload, neededReload, neededReload, needsReload, reload, remove, set_comment, set_complete, set_creationDate, set_label, set, setComment, setComplete, setCreationDate, setDB, setHardOrSoft, setID, setLabel, setLastClear, SetProperty, setServer, SetStringProperty, setTimeoutInSecs, setTimestamp, setType, setTypeID, stale, toRDF, toRDFWrapped, update

Methods inherited from class java.util.Observable

addObserver, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AType

public AType(RDFDB db,
             URL id)
      throws Exception

Constructor for the Type object

Parameters:

db -

id -

Throws:

Exception

Method Detail

getValue

public abstract Object getValue(NSParameter parameter,
                                Parameters user)
                         throws Exception

Read a value of the given type from the parameters

Specified by:

getValue in interface Type

Overrides:

getValue in class RDFClass

Parameters:

parameter -

user -

Returns:

an object

Throws:

Exception

getJavaType

public abstract String getJavaType()

Specified by:

getJavaType in interface Type

Overrides:

getJavaType in class RDFClass

Returns:

the name of the Java class that correspond to this type

getJavaSimpleType

public String getJavaSimpleType()

Specified by:

getJavaSimpleType in interface Type

Overrides:

getJavaSimpleType in class RDFClass

Returns:

the name of the Java simple type that correspond to this type

getFormType

public abstract String getFormType()

Return the type for the HTML input form field.

Specified by:

getFormType in interface Type

Overrides:

getFormType in class RDFClass

Returns:

the type name

getStringToTypeOp

public String getStringToTypeOp()

Specified by:

getStringToTypeOp in interface Type

Overrides:

getStringToTypeOp in class RDFClass

Returns:

the name of the operation to be applied to a String to get a value of this type or null if no convertion is needed

getDefaultValue

public String getDefaultValue()

Specified by:

getDefaultValue in interface Type

Overrides:

getDefaultValue in class RDFClass

Returns:

the default value for this type

needsFormType

public abstract int needsFormType()

Specified by:

needsFormType in interface Type

Overrides:

needsFormType in class RDFClass

Returns:

the simple form type required to input this type