Java tutorial
/* * Copyright (C) 2017 The Regents of the University of Michigan * * Licensed 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 edu.umich.oasis.common; import android.os.Parcel; import android.os.Parcelable; import android.util.Log; import org.apache.commons.lang3.ObjectUtils; import java.util.Collections; import java.util.List; public class SodaDetails implements Parcelable { private static final String TAG = "OASIS.SodaDetails"; private static final boolean localLOGV = Log.isLoggable(TAG, Log.VERBOSE); private static final boolean localLOGD = Log.isLoggable(TAG, Log.DEBUG); public SodaDescriptor descriptor; public String resultType; public List<ParamInfo> paramInfo; public TaintSet requiredTaints; public TaintSet optionalTaints; public SodaDetails() { } public SodaDetails(Parcel in) { readFromParcel(in); } @Override public int describeContents() { return 0; } public void copyFrom(SodaDetails other) { this.descriptor = other.descriptor; this.resultType = other.resultType; this.paramInfo = other.paramInfo; this.requiredTaints = other.requiredTaints; this.optionalTaints = other.optionalTaints; } public void readFromParcel(Parcel source) { final int length = source.readInt(); final int endPos = source.dataPosition() + length; if (localLOGV) { Log.v(TAG, "Unparceling, length " + length); } if (source.dataPosition() < endPos) { descriptor = SodaDescriptor.readFromParcel(source); if (localLOGV) { Log.v(TAG, "Descriptor: " + descriptor); } } if (source.dataPosition() < endPos) { resultType = source.readString(); if (localLOGV) { Log.v(TAG, "Result type: " + resultType); } } if (source.dataPosition() < endPos) { paramInfo = source.createTypedArrayList(ParamInfo.CREATOR); if (paramInfo != null) { if (localLOGV) { Log.v(TAG, "Param info (size " + paramInfo.size() + "):"); for (ParamInfo pi : paramInfo) { Log.v(TAG, " " + pi); } } paramInfo = Collections.unmodifiableList(paramInfo); } else if (localLOGV) { Log.v(TAG, "Param info (null)"); } } if (source.dataPosition() < endPos) { requiredTaints = TaintSet.readFromParcel(source); if (localLOGV) { Log.v(TAG, "Required taints: " + requiredTaints); } } if (source.dataPosition() < endPos) { optionalTaints = TaintSet.readFromParcel(source); if (localLOGV) { Log.v(TAG, "Optional taints: " + optionalTaints); } } if (source.dataPosition() < endPos) { if (localLOGD) { Log.d(TAG, "Excess data at end of parcel"); } source.setDataPosition(endPos); } } @Override public void writeToParcel(Parcel dest, int flags) { // This space will be filled in with the final size of the object, minus this header. final int headerPos = dest.dataPosition(); dest.writeInt(0); final int startPos = dest.dataPosition(); // Special handling for completely null objects - leave length at zero. if (ObjectUtils.firstNonNull(descriptor, resultType, paramInfo, requiredTaints, optionalTaints) == null) { if (localLOGV) { Log.v(TAG, "Null case, writing size 0"); } return; } SodaDescriptor.writeToParcel(descriptor, dest, flags); dest.writeString(resultType); dest.writeTypedList(paramInfo); TaintSet.writeToParcel(requiredTaints, dest, flags); TaintSet.writeToParcel(optionalTaints, dest, flags); final int endPos = dest.dataPosition(); dest.setDataPosition(headerPos); dest.writeInt(endPos - startPos); dest.setDataPosition(endPos); if (localLOGV) { Log.v(TAG, "Total size: " + (endPos - startPos)); } } public static final Creator<SodaDetails> CREATOR = new Creator<SodaDetails>() { @Override public SodaDetails createFromParcel(Parcel in) { SodaDetails sd = new SodaDetails(); sd.readFromParcel(in); return sd; } @Override public SodaDetails[] newArray(int size) { return new SodaDetails[size]; } }; }