001    /*
002     *  Copyright 2001-2013 Stephen Colebourne
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.joda.beans.impl;
017    
018    import java.util.NoSuchElementException;
019    
020    import org.joda.beans.Bean;
021    import org.joda.beans.MetaBean;
022    import org.joda.beans.MetaProperty;
023    import org.joda.beans.PropertyMap;
024    
025    /**
026     * Basic implementation of {@code MetaBean}.
027     * 
028     * @author Stephen Colebourne
029     */
030    public abstract class BasicMetaBean implements MetaBean {
031    
032        @Override
033        public PropertyMap createPropertyMap(Bean bean) {
034            return BasicPropertyMap.of(bean);
035        }
036    
037        @Override
038        public String beanName() {
039            return beanType().getName();
040        }
041    
042        @Override
043        public int metaPropertyCount() {
044            return metaPropertyMap().size();
045        }
046    
047        @Override
048        public boolean metaPropertyExists(String propertyName) {
049            return metaPropertyMap().containsKey(propertyName);
050        }
051    
052        @SuppressWarnings("unchecked")
053        @Override
054        public <R> MetaProperty<R> metaProperty(String propertyName) {
055            MetaProperty<?> mp = metaPropertyMap().get(propertyName);
056            if (mp == null) {
057                throw new NoSuchElementException("Unknown property: " + propertyName);
058            }
059            return (MetaProperty<R>) mp;
060        }
061    
062        @Override
063        public Iterable<MetaProperty<?>> metaPropertyIterable() {
064            return metaPropertyMap().values();
065        }
066    
067        //-----------------------------------------------------------------------
068        /**
069         * Returns a string that summarises the meta-bean.
070         * 
071         * @return a summary string, not null
072         */
073        @Override
074        public String toString() {
075            return "MetaBean:" + beanType().getSimpleName();
076        }
077    
078    }