Examples with Request org.datanucleus.store.rdbms.request.Request used on opensource projects

Example 1 with Request

use of org.datanucleus.store.rdbms.request.Request in project datanucleus-rdbms by datanucleus.

the class RDBMSPersistenceHandler method getInsertRequest.

/**
 * Returns a request object that will insert a row in the given table.
 * The store manager will cache the request object for re-use by subsequent requests to the same table.
 * @param table The table into which to insert.
 * @param cmd ClassMetaData of the object of the request
 * @param clr ClassLoader resolver
 * @return An insertion request object.
 */
private Request getInsertRequest(DatastoreClass table, AbstractClassMetaData cmd, ClassLoaderResolver clr) {
    RequestIdentifier reqID = new RequestIdentifier(table, null, RequestType.INSERT, cmd.getFullClassName());
    Request req = requestsByID.get(reqID);
    if (req == null) {
        req = new InsertRequest(table, cmd, clr);
        requestsByID.put(reqID, req);
    }
    return req;
}

Example 2 with Request

use of org.datanucleus.store.rdbms.request.Request in project datanucleus-rdbms by datanucleus.

the class RDBMSPersistenceHandler method getLocateRequest.

/**
 * Returns a request object that will locate a row from the given table.
 * The store manager will cache the request object for re-use by subsequent requests to the same table.
 * @param table The table from which to locate.
 * @param className the class name of the object of the request
 * @return A locate request object.
 */
private Request getLocateRequest(DatastoreClass table, String className) {
    RequestIdentifier reqID = new RequestIdentifier(table, null, RequestType.LOCATE, className);
    Request req = requestsByID.get(reqID);
    if (req == null) {
        req = new LocateRequest(table);
        requestsByID.put(reqID, req);
    }
    return req;
}

Example 3 with Request

use of org.datanucleus.store.rdbms.request.Request in project datanucleus-rdbms by datanucleus.

the class RDBMSPersistenceHandler method getUpdateRequest.

/**
 * Returns a request object that will update a row in the given table.
 * The store manager will cache the request object for re-use by subsequent requests to the same table.
 * @param table The table in which to update.
 * @param mmds The metadata corresponding to the columns to be updated.
 *     MetaData whose columns exist in supertables will be ignored.
 * @param cmd ClassMetaData of the object of the request
 * @param clr ClassLoader resolver
 * @return An update request object.
 */
private Request getUpdateRequest(DatastoreClass table, AbstractMemberMetaData[] mmds, AbstractClassMetaData cmd, ClassLoaderResolver clr) {
    RequestIdentifier reqID = new RequestIdentifier(table, mmds, RequestType.UPDATE, cmd.getFullClassName());
    Request req = requestsByID.get(reqID);
    if (req == null) {
        req = new UpdateRequest(table, mmds, cmd, clr);
        requestsByID.put(reqID, req);
    }
    return req;
}

Example 4 with Request

use of org.datanucleus.store.rdbms.request.Request in project datanucleus-rdbms by datanucleus.

the class RDBMSPersistenceHandler method getFetchRequest.

/**
 * Returns a request object that will fetch a row from the given table.
 * The store manager will cache the request object for re-use by subsequent requests to the same table.
 * @param table The table from which to fetch.
 * @param mmds MetaData for the members corresponding to the columns to be fetched.
 * @param cmd ClassMetaData of the object of the request
 * @param clr ClassLoader resolver
 * @return A fetch request object.
 */
private Request getFetchRequest(DatastoreClass table, AbstractMemberMetaData[] mmds, AbstractClassMetaData cmd, ClassLoaderResolver clr) {
    RequestIdentifier reqID = new RequestIdentifier(table, mmds, RequestType.FETCH, cmd.getFullClassName());
    Request req = requestsByID.get(reqID);
    if (req == null) {
        req = new FetchRequest(table, mmds, cmd, clr);
        requestsByID.put(reqID, req);
    }
    return req;
}

Example 5 with Request

use of org.datanucleus.store.rdbms.request.Request in project datanucleus-rdbms by datanucleus.

the class RDBMSPersistenceHandler method getDeleteRequest.

/**
 * Returns a request object that will delete a row from the given table.
 * The store manager will cache the request object for re-use by subsequent requests to the same table.
 * @param table The table from which to delete.
 * @param acmd ClassMetaData of the object of the request
 * @param clr ClassLoader resolver
 * @return A deletion request object.
 */
private Request getDeleteRequest(DatastoreClass table, AbstractClassMetaData acmd, ClassLoaderResolver clr) {
    RequestIdentifier reqID = new RequestIdentifier(table, null, RequestType.DELETE, acmd.getFullClassName());
    Request req = requestsByID.get(reqID);
    if (req == null) {
        req = new DeleteRequest(table, acmd, clr);
        requestsByID.put(reqID, req);
    }
    return req;
}