| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| package org.spaceroots.mantissa.functions.scalar; |
| |
| import java.io.Serializable; |
| |
| import org.spaceroots.mantissa.functions.FunctionException; |
| import org.spaceroots.mantissa.functions.ExhaustedSampleException; |
| |
| /** This class is a simple wrapper allowing to iterate over a |
| * SampledFunction. |
| |
| * <p>The basic implementation of the iteration interface does not |
| * perform any transformation on the sample, it only handles a loop |
| * over the underlying sampled function.</p> |
| |
| * @see SampledFunction |
| |
| * @version $Id$ |
| * @author L. Maisonobe |
| |
| */ |
| public class BasicSampledFunctionIterator |
| implements SampledFunctionIterator, Serializable { |
| |
| /** Underlying sampled function. */ |
| private final SampledFunction function; |
| |
| /** Next sample element. */ |
| private int next; |
| |
| /** Simple constructor. |
| * Build an instance from a SampledFunction |
| * @param function smapled function over which we want to iterate |
| */ |
| public BasicSampledFunctionIterator(SampledFunction function) { |
| this.function = function; |
| next = 0; |
| } |
| |
| public boolean hasNext() { |
| return next < function.size(); |
| } |
| |
| public ScalarValuedPair nextSamplePoint() |
| throws ExhaustedSampleException, FunctionException { |
| if (next >= function.size()) { |
| throw new ExhaustedSampleException(function.size()); |
| } |
| |
| int current = next++; |
| return function.samplePointAt(current); |
| |
| } |
| |
| private static final long serialVersionUID = -9106690005598356403L; |
| |
| } |