package client.net.sf.saxon.ce.om;
/**
* A value that exists in memory and that can be directly addressed
*/
public interface GroundedValue extends ValueRepresentation {
/**
* Get the n'th item in the value, counting from 0
* @param n the index of the required item, with 0 representing the first item in the sequence
* @return the n'th item if it exists, or null otherwise
*/
public Item itemAt(int n);
/**
* Get a subsequence of the value
* @param start the index of the first item to be included in the result, counting from zero.
* A negative value is taken as zero. If the value is beyond the end of the sequence, an empty
* sequence is returned
* @param length the number of items to be included in the result. Specify Integer.MAX_VALUE to
* get the subsequence up to the end of the base sequence. If the value is negative, an empty sequence
* is returned. If the value goes off the end of the sequence, the result returns items up to the end
* of the sequence
* @return the required subsequence. If min is
*/
public GroundedValue subsequence(int start, int length);
}
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.