| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.jackrabbit.oak.plugins.memory; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static java.util.Collections.singleton; |
| |
| import javax.jcr.PropertyType; |
| |
| import org.apache.jackrabbit.oak.api.Type; |
| import org.apache.jackrabbit.oak.plugins.value.Conversions.Converter; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * Abstract base class for single valued {@code PropertyState} implementations. |
| */ |
| abstract class SinglePropertyState<T> extends EmptyPropertyState { |
| |
| /** |
| * Create a new property state with the given {@code name} |
| * @param name The name of the property state. |
| */ |
| protected SinglePropertyState(@NotNull String name) { |
| super(name); |
| } |
| |
| /** |
| * @return {@code false} |
| */ |
| @Override |
| public boolean isArray() { |
| return false; |
| } |
| |
| /** |
| * Create a converter for converting the value of this property to other types. |
| * @return A converter for the value of this property |
| */ |
| public abstract Converter getConverter(); |
| |
| @SuppressWarnings("unchecked") |
| private <S> S convertTo(Type<S> type) { |
| switch (type.tag()) { |
| case PropertyType.STRING: return (S) getConverter().toString(); |
| case PropertyType.BINARY: return (S) getConverter().toBinary(); |
| case PropertyType.LONG: return (S) (Long) getConverter().toLong(); |
| case PropertyType.DOUBLE: return (S) (Double) getConverter().toDouble(); |
| case PropertyType.DATE: return (S) getConverter().toDate(); |
| case PropertyType.BOOLEAN: return (S) (Boolean) getConverter().toBoolean(); |
| case PropertyType.NAME: return (S) getConverter().toString(); |
| case PropertyType.PATH: return (S) getConverter().toString(); |
| case PropertyType.REFERENCE: return (S) getConverter().toString(); |
| case PropertyType.WEAKREFERENCE: return (S) getConverter().toString(); |
| case PropertyType.URI: return (S) getConverter().toString(); |
| case PropertyType.DECIMAL: return (S) getConverter().toDecimal(); |
| default: throw new IllegalArgumentException("Unknown type:" + type); |
| } |
| } |
| |
| /** |
| * The value of this property |
| * @return Value of this property |
| */ |
| public abstract T getValue(); |
| |
| /** |
| * @throws IllegalArgumentException if {@code type} is not one of the |
| * values defined in {@link Type}. |
| */ |
| @SuppressWarnings("unchecked") |
| @NotNull |
| @Override |
| public <S> S getValue(Type<S> type) { |
| if (type.isArray()) { |
| if (getType() == type.getBaseType()) { |
| return (S) singleton(getValue()); |
| } else { |
| return (S) singleton(convertTo(type.getBaseType())); |
| } |
| } else { |
| if (getType() == type) { |
| return (S) getValue(); |
| } else { |
| return convertTo(type); |
| } |
| } |
| } |
| |
| /** |
| * @throws IllegalArgumentException if {@code type.isArray} is {@code true} |
| * @throws IndexOutOfBoundsException if {@code index != 0} |
| */ |
| @NotNull |
| @Override |
| public <S> S getValue(Type<S> type, int index) { |
| checkArgument(!type.isArray(), "Type must not be an array type"); |
| if (index != 0) { |
| throw new IndexOutOfBoundsException(String.valueOf(index)); |
| } |
| return getValue(type); |
| } |
| |
| /** |
| * @return {@code getString().length()} |
| */ |
| @Override |
| public long size() { |
| return convertTo(Type.STRING).length(); |
| } |
| |
| /** |
| * @return {@code size} |
| * @throws IndexOutOfBoundsException if {@code index != 0} |
| */ |
| @Override |
| public long size(int index) { |
| if (index != 0) { |
| throw new IndexOutOfBoundsException(String.valueOf(index)); |
| } |
| return size(); |
| } |
| |
| /** |
| * @return {@code 1} |
| */ |
| @Override |
| public int count() { |
| return 1; |
| } |
| } |