001 /*
002 * Copyright 2008-2015 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package org.codehaus.griffon.runtime.core;
017
018 import griffon.core.Configuration;
019
020 import javax.annotation.Nonnull;
021 import javax.annotation.Nullable;
022 import java.util.Properties;
023
024 import static griffon.util.CollectionUtils.toProperties;
025 import static griffon.util.TypeUtils.castToBoolean;
026 import static griffon.util.TypeUtils.castToDouble;
027 import static griffon.util.TypeUtils.castToFloat;
028 import static griffon.util.TypeUtils.castToInt;
029 import static griffon.util.TypeUtils.castToLong;
030 import static java.util.Objects.requireNonNull;
031
032 /**
033 * @author Andres Almiray
034 * @since 2.2.0
035 */
036 public abstract class ConfigurationDecorator implements Configuration {
037 protected final Configuration delegate;
038
039 public ConfigurationDecorator(@Nonnull Configuration delegate) {
040 this.delegate = requireNonNull(delegate, "Argument 'delegate' must not be null.");
041 }
042
043 @Override
044 @Nullable
045 public Object get(@Nonnull String key) {
046 return delegate.get(key);
047 }
048
049 @Nullable
050 @Override
051 @SuppressWarnings("unchecked")
052 public <T> T get(@Nonnull String key, @Nullable T defaultValue) {
053 T value = (T) get(key);
054 return value != null ? value : defaultValue;
055 }
056
057 @Nullable
058 @Override
059 public Object getAt(@Nonnull String key) {
060 return get(key);
061 }
062
063 @Nullable
064 @Override
065 public <T> T getAt(@Nonnull String key, @Nullable T defaultValue) {
066 return get(key, defaultValue);
067 }
068
069 @Override
070 public boolean getAsBoolean(@Nonnull String key) {
071 return getAsBoolean(key, false);
072 }
073
074 @Override
075 public boolean getAsBoolean(@Nonnull String key, boolean defaultValue) {
076 return castToBoolean(get(key), defaultValue);
077 }
078
079 @Override
080 public int getAsInt(@Nonnull String key) {
081 return getAsInt(key, 0);
082 }
083
084 @Override
085 public int getAsInt(@Nonnull String key, int defaultValue) {
086 return castToInt(get(key), defaultValue);
087 }
088
089 @Override
090 public long getAsLong(@Nonnull String key) {
091 return getAsLong(key, 0L);
092 }
093
094 @Override
095 public long getAsLong(@Nonnull String key, long defaultValue) {
096 return castToLong(get(key), defaultValue);
097 }
098
099 @Override
100 public float getAsFloat(@Nonnull String key) {
101 return getAsFloat(key, 0f);
102 }
103
104 @Override
105 public float getAsFloat(@Nonnull String key, float defaultValue) {
106 return castToFloat(get(key), defaultValue);
107 }
108
109 @Override
110 public double getAsDouble(@Nonnull String key) {
111 return getAsDouble(key, 0d);
112 }
113
114 @Override
115 public double getAsDouble(@Nonnull String key, double defaultValue) {
116 return castToDouble(get(key), defaultValue);
117 }
118
119 @Nullable
120 @Override
121 public String getAsString(@Nonnull String key) {
122 return getAsString(key, null);
123 }
124
125 @Nullable
126 @Override
127 public String getAsString(@Nonnull String key, @Nullable String defaultValue) {
128 Object value = get(key);
129 return value != null ? String.valueOf(value) : defaultValue;
130 }
131
132 @Nonnull
133 @Override
134 public Properties asProperties() {
135 return toProperties(asFlatMap());
136 }
137 }
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