net.cnri.apps.doserver.operators

Class StandardOperations

java.lang.Object

net.cnri.knowbots.lib.Knowbot

net.cnri.apps.doserver.operators.StandardOperations

All Implemented Interfaces:

java.io.Serializable, DOConstants, DOOperation

public class StandardOperations
extends net.cnri.knowbots.lib.Knowbot
implements DOOperation, DOConstants

Operator that provides simple digital object operations, like saving and retrieving object data elements, certificates, etc.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DATA_ELEMENT_PREFIX
static java.lang.String	GRANTED_KEY_PREFIX
static java.lang.String	OBJ_CREDENTIALS_ELEMENT
static java.lang.String	OBJ_TYPES_ELEMENT
static java.lang.String	PARAM_ELEMENT_ID
static java.lang.String	PARAM_GET_DATA_LEN
static java.lang.String	PARAM_GET_DATA_START

Fields inherited from interface net.cnri.dobj.DOConstants

ABSTRACT_ATTRIBUTE, ADD_RELATIONSHIPS_OP_ID, ADD_TYPE_OP_ID, ANONYMOUS_ID, AUDIT_GET_OP_ID, AUDIT_QUERY_OP_ID, CHECK_AUTHORIZATION_OP_ID, CHECK_DELEGATE_OP_ID, CLIENT_AUTH_TYPE_HSPUBKEY, CLIENT_AUTH_TYPE_HSSECKEY, CONTENT_ELEMENT_ID, CREATE_OBJ_OP_ID, CREATOR_ATTRIBUTE, DATE_CREATED_ATTRIBUTE, DATE_FORMAT_MDYHMS, DATE_MODIFIED_ATTRIBUTE, DEFAULT_CLIENT_CERT_EXPIRATION_DAYS, DEL_ATTRIBUTES_OP_ID, DELETE_DATA_OP_ID, DELETE_OBJ_OP_ID, DOES_OBJ_EXIST_OP_ID, ELEMENT_ATTS_MSGTYPE, EM_COMMAND_CREATE_DATASTREAM, EM_COMMAND_CREATE_DISSEMINATOR, EM_COMMAND_CREATE_DO, EM_COMMAND_DELETE_ATTACHMENTS, EM_COMMAND_DELETE_DATASTREAM, EM_COMMAND_DELETE_DISSEMINATOR, EM_COMMAND_DELETE_DO, EM_COMMAND_GET_DATASTREAM_BYTES, EM_COMMAND_GET_DATASTREAM_KEY_METADATA, EM_COMMAND_GET_DISSEMINATION, EM_COMMAND_GET_DISSEMINATOR_METADATA, EM_COMMAND_GET_EXECUTABLE, EM_COMMAND_GET_KEY_METADATA, EM_COMMAND_GET_READ_REQUEST, EM_COMMAND_GET_SERVLET, EM_COMMAND_GET_TYPE_SIGNATURE, EM_COMMAND_GET_VERSION, EM_COMMAND_LIST_ATTACHMENTS, EM_COMMAND_LIST_DATASTREAMS, EM_COMMAND_LIST_DISSEMINATORS, EM_COMMAND_LIST_DO, EM_COMMAND_LIST_DO_POLICIES, EM_COMMAND_SET_ATTACHMENTS, EM_COMMAND_SET_DATASTREAM_BYTES, EM_COMMAND_SET_DO_POLICIES, EM_COMMAND_SET_EXECUTABLE, EM_COMMAND_SET_READ_REQUEST, EM_COMMAND_VERIFY_DO, FILE_NAME_ATTRIBUTE, FOLDER_ATTRIBUTE, GET_ATTRIBUTES_OP_ID, GET_CREDENTIALS_OP_ID, GET_DATA_OP_ID, GET_REPO_TXNS_OP_ID, GET_SERIALIZED_FORM_OP_ID, GRANT_KEY_OP_ID, HAS_TYPE_OP_ID, INDEX_UP_TO_DATE_ID, INJECT_KNOWBOT_OP_ID, IS_PART_OF_ATTRIBUTE, LANGUAGE_ATTRIBUTE, LIST_DATA_OP_ID, LIST_DELEGATORS_OP_ID, LIST_OBJECTS_OP_ID, LIST_OPERATIONS_OP_ID, LIST_TYPES_OP_ID, MIME_TYPE_ATTRIBUTE, NOTES_ATTRIBUTE, OBJECT_ATTS_MSGTYPE, OBJECT_NAME_HDL_TYPE, OBJECT_SERVER_HDL_TYPE, OBJECT_SVRINFO_HDL_TYPE, OWNER_ATTRIBUTE, PARAM_ATTRIBUTES, PUSH_REPO_TXN_OP_ID, REFERENCES_ATTRIBUTE, REINDEX_OBJECT_ID, REMOVE_TYPE_OP_ID, REPO_RIGHTS_ELEMENT_ID, RIGHTS_DELEGATION_OBJECT_HDL_TYPE, RIGHTS_ELEMENT_ID, SEARCH_OP_ID, SET_ATTRIBUTES_OP_ID, SIZE_ATTRIBUTE, STORE_CREDENTIAL_OP_ID, STORE_DATA_OP_ID, TITLE_ATTRIBUTE

Constructor Summary

Constructors

Constructor and Description
StandardOperations(Main serverMain, DelegationClient client)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canHandleOperation(DOOperationContext context) Returns true iff this object can perform the given operation on behalf of the caller on the given object.
void	executeInContext()
static java.security.cert.CertificateFactory	getCertFactory()
java.lang.String[]	listOperations(DOOperationContext context) Returns a list of operations that this operator can perform on the object identified by the DOOperationContext parameter.
void	performOperation(DOOperationContext context, java.io.InputStream in, java.io.OutputStream out) Performs the given operation (which this object has advertised that it can handle) which consists of reading input (if any is expected) from the given InputStream and writing the output of the operation (if any) to the OutputStream.

Methods inherited from class net.cnri.knowbots.lib.Knowbot

getContext, getIconImage, getLabel, initializeInContext, setContext

Methods inherited from class java.lang.Object

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

Field Detail

GRANTED_KEY_PREFIX

public static final java.lang.String GRANTED_KEY_PREFIX

See Also:

Constant Field Values

PARAM_ELEMENT_ID

public static final java.lang.String PARAM_ELEMENT_ID

See Also:

Constant Field Values

PARAM_GET_DATA_START

public static final java.lang.String PARAM_GET_DATA_START

See Also:

Constant Field Values

PARAM_GET_DATA_LEN

public static final java.lang.String PARAM_GET_DATA_LEN

See Also:

Constant Field Values

DATA_ELEMENT_PREFIX

public static final java.lang.String DATA_ELEMENT_PREFIX

See Also:

Constant Field Values

OBJ_TYPES_ELEMENT

public static final java.lang.String OBJ_TYPES_ELEMENT

See Also:

Constant Field Values

OBJ_CREDENTIALS_ELEMENT

public static final java.lang.String OBJ_CREDENTIALS_ELEMENT

See Also:

Constant Field Values

Constructor Detail

StandardOperations

public StandardOperations(Main serverMain,
                  DelegationClient client)

Method Detail

getCertFactory

public static java.security.cert.CertificateFactory getCertFactory()
                                                            throws java.security.cert.CertificateException

Throws:

java.security.cert.CertificateException

canHandleOperation

public boolean canHandleOperation(DOOperationContext context)

Description copied from interface: DOOperation

Returns true iff this object can perform the given operation on behalf of the caller on the given object. The operation, object, caller, and request parameters are all provided by the given DOOperationContext object.

Specified by:

canHandleOperation in interface DOOperation

listOperations

public java.lang.String[] listOperations(DOOperationContext context)

Returns a list of operations that this operator can perform on the object identified by the DOOperationContext parameter.

Specified by:

listOperations in interface DOOperation

executeInContext

public void executeInContext()

Specified by:

executeInContext in class net.cnri.knowbots.lib.Knowbot

performOperation

public void performOperation(DOOperationContext context,
                    java.io.InputStream in,
                    java.io.OutputStream out)

Performs the given operation (which this object has advertised that it can handle) which consists of reading input (if any is expected) from the given InputStream and writing the output of the operation (if any) to the OutputStream. This method should *always* close the input and output streams when finished with them. If there are any errors in the input, the error message must be communicated on the OutputStream since all errors must be at the application level. Any exceptions thrown by this method will *not* be communicated to the caller and are therefore not acceptable.

Specified by:

performOperation in interface DOOperation