| /* |
| * Copyright (C) 2012 Google Inc. |
| * |
| * 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 com.google.caliper.model; |
| |
| import static com.google.caliper.model.PersistentHashing.getPersistentHashFunction; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.base.Preconditions.checkState; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.collect.ImmutableSortedMap; |
| import com.google.common.collect.Maps; |
| |
| import java.util.Map; |
| import java.util.SortedMap; |
| |
| /** |
| * A specification by which the application of an instrument can be uniquely identified. |
| * |
| * @author gak@google.com (Gregory Kick) |
| */ |
| public final class InstrumentSpec { |
| static final InstrumentSpec DEFAULT = new InstrumentSpec(); |
| |
| @ExcludeFromJson |
| private int id; |
| private String className; |
| private SortedMap<String, String> options; |
| @ExcludeFromJson |
| private int hash; |
| |
| private InstrumentSpec() { |
| this.className = ""; |
| this.options = Maps.newTreeMap(); |
| } |
| |
| private InstrumentSpec(Builder builder) { |
| this.className = builder.className; |
| this.options = Maps.newTreeMap(builder.options); |
| } |
| |
| public String className() { |
| return className; |
| } |
| |
| public ImmutableSortedMap<String, String> options() { |
| return ImmutableSortedMap.copyOf(options); |
| } |
| |
| @Override public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } else if (obj instanceof InstrumentSpec) { |
| InstrumentSpec that = (InstrumentSpec) obj; |
| return this.className.equals(that.className) |
| && this.options.equals(that.options); |
| } else { |
| return false; |
| } |
| } |
| |
| private void initHash() { |
| if (hash == 0) { |
| this.hash = getPersistentHashFunction() |
| .newHasher() |
| .putUnencodedChars(className) |
| .putObject(options, StringMapFunnel.INSTANCE) |
| .hash().asInt(); |
| } |
| } |
| |
| @Override public int hashCode() { |
| initHash(); |
| return hash; |
| } |
| |
| @Override public String toString() { |
| return MoreObjects.toStringHelper(this) |
| .add("className", className) |
| .add("options", options) |
| .toString(); |
| } |
| |
| public static final class Builder { |
| private String className; |
| private final SortedMap<String, String> options = Maps.newTreeMap(); |
| |
| public Builder className(String className) { |
| this.className = checkNotNull(className); |
| return this; |
| } |
| |
| public Builder instrumentClass(Class<?> insturmentClass) { |
| return className(insturmentClass.getName()); |
| } |
| |
| public Builder addOption(String option, String value) { |
| this.options.put(option, value); |
| return this; |
| } |
| |
| public Builder addAllOptions(Map<String, String> options) { |
| this.options.putAll(options); |
| return this; |
| } |
| |
| public InstrumentSpec build() { |
| checkState(className != null); |
| return new InstrumentSpec(this); |
| } |
| } |
| } |