1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18package android.filterpacks.text; 19 20import android.filterfw.core.Filter; 21import android.filterfw.core.FilterContext; 22import android.filterfw.core.Frame; 23import android.filterfw.core.FrameFormat; 24import android.filterfw.format.ObjectFormat; 25 26/** 27 * @hide 28 */ 29public class ToUpperCase extends Filter { 30 31 private FrameFormat mOutputFormat; 32 33 public ToUpperCase(String name) { 34 super(name); 35 } 36 37 @Override 38 public void setupPorts() { 39 mOutputFormat = ObjectFormat.fromClass(String.class, FrameFormat.TARGET_SIMPLE); 40 addMaskedInputPort("mixedcase", mOutputFormat); 41 addOutputPort("uppercase", mOutputFormat); 42 } 43 44 @Override 45 public void process(FilterContext env) { 46 Frame input = pullInput("mixedcase"); 47 String inputString = (String)input.getObjectValue(); 48 49 Frame output = env.getFrameManager().newFrame(mOutputFormat); 50 output.setObjectValue(inputString.toUpperCase()); 51 52 pushOutput("uppercase", output); 53 } 54 55} 56