| /* |
| * 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 java.math.BigDecimal; |
| import java.util.List; |
| |
| import javax.jcr.PropertyType; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.Iterables; |
| import com.google.common.collect.Lists; |
| import org.apache.jackrabbit.oak.api.Blob; |
| 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 multi valued {@code PropertyState} implementations. |
| */ |
| abstract class MultiPropertyState<T> extends EmptyPropertyState { |
| protected final List<T> values; |
| |
| /** |
| * Create a new property state with the given {@code name} |
| * and {@code values} |
| * @param name The name of the property state. |
| * @param values The values of the property state. |
| */ |
| protected MultiPropertyState(String name, Iterable<T> values) { |
| super(name); |
| this.values = Lists.newArrayList(values); |
| } |
| |
| /** |
| * Create a converter for converting a value to other types. |
| * @param value The value to convert |
| * @return A converter for the value of this property |
| */ |
| public abstract Converter getConverter(T value); |
| |
| @SuppressWarnings("unchecked") |
| private <S> S convertTo(Type<S> type) { |
| switch (type.tag()) { |
| case PropertyType.STRING: |
| return (S) Iterables.transform(values, new Function<T, String>() { |
| @Override |
| public String apply(T value) { |
| return getConverter(value).toString(); |
| } |
| }); |
| case PropertyType.BINARY: |
| return (S) Iterables.transform(values, new Function<T, Blob>() { |
| @Override |
| public Blob apply(T value) { |
| return getConverter(value).toBinary(); |
| } |
| }); |
| case PropertyType.LONG: |
| return (S) Iterables.transform(values, new Function<T, Long>() { |
| @Override |
| public Long apply(T value) { |
| return getConverter(value).toLong(); |
| } |
| }); |
| case PropertyType.DOUBLE: |
| return (S) Iterables.transform(values, new Function<T, Double>() { |
| @Override |
| public Double apply(T value) { |
| return getConverter(value).toDouble(); |
| } |
| }); |
| case PropertyType.DATE: |
| return (S) Iterables.transform(values, new Function<T, String>() { |
| @Override |
| public String apply(T value) { |
| return getConverter(value).toDate(); |
| } |
| }); |
| case PropertyType.BOOLEAN: |
| return (S) Iterables.transform(values, new Function<T, Boolean>() { |
| @Override |
| public Boolean apply(T value) { |
| return getConverter(value).toBoolean(); |
| } |
| }); |
| case PropertyType.NAME: |
| return (S) Iterables.transform(values, new Function<T, String>() { |
| @Override |
| public String apply(T value) { |
| return getConverter(value).toString(); |
| } |
| }); |
| case PropertyType.PATH: |
| return (S) Iterables.transform(values, new Function<T, String>() { |
| @Override |
| public String apply(T value) { |
| return getConverter(value).toString(); |
| } |
| }); |
| case PropertyType.REFERENCE: |
| return (S) Iterables.transform(values, new Function<T, String>() { |
| @Override |
| public String apply(T value) { |
| return getConverter(value).toString(); |
| } |
| }); |
| case PropertyType.WEAKREFERENCE: |
| return (S) Iterables.transform(values, new Function<T, String>() { |
| @Override |
| public String apply(T value) { |
| return getConverter(value).toString(); |
| } |
| }); |
| case PropertyType.URI: |
| return (S) Iterables.transform(values, new Function<T, String>() { |
| @Override |
| public String apply(T value) { |
| return getConverter(value).toString(); |
| } |
| }); |
| case PropertyType.DECIMAL: |
| return (S) Iterables.transform(values, new Function<T, BigDecimal>() { |
| @Override |
| public BigDecimal apply(T value) { |
| return getConverter(value).toDecimal(); |
| } |
| }); |
| default: throw new IllegalArgumentException("Unknown type:" + type); |
| } |
| } |
| |
| /** |
| * @throws IllegalArgumentException if {@code type} is not one of the |
| * values defined in {@link Type} or if {@code type.isArray()} is {@code false}. |
| */ |
| @SuppressWarnings("unchecked") |
| @NotNull |
| @Override |
| public <S> S getValue(Type<S> type) { |
| checkArgument(type.isArray(), "Type must be an array type"); |
| if (getType() == type) { |
| return (S) values; |
| } |
| else { |
| return convertTo(type); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| private <S> S convertTo(Type<S> type, int index) { |
| switch (type.tag()) { |
| case PropertyType.STRING: return (S) getConverter(values.get(index)).toString(); |
| case PropertyType.BINARY: return (S) getConverter(values.get(index)).toBinary(); |
| case PropertyType.LONG: return (S) (Long) getConverter(values.get(index)).toLong(); |
| case PropertyType.DOUBLE: return (S) (Double) getConverter(values.get(index)).toDouble(); |
| case PropertyType.DATE: return (S) getConverter(values.get(index)).toString(); |
| case PropertyType.BOOLEAN: return (S) (Boolean) getConverter(values.get(index)).toBoolean(); |
| case PropertyType.NAME: return (S) getConverter(values.get(index)).toString(); |
| case PropertyType.PATH: return (S) getConverter(values.get(index)).toString(); |
| case PropertyType.REFERENCE: return (S) getConverter(values.get(index)).toString(); |
| case PropertyType.WEAKREFERENCE: return (S) getConverter(values.get(index)).toString(); |
| case PropertyType.URI: return (S) getConverter(values.get(index)).toString(); |
| case PropertyType.DECIMAL: return (S) getConverter(values.get(index)).toDecimal(); |
| default: throw new IllegalArgumentException("Unknown type:" + type); |
| } |
| } |
| |
| /** |
| * @throws IllegalArgumentException if {@code type} is not one of the |
| * values defined in {@link Type} or if {@code type.isArray()} is {@code true} |
| * @throws IndexOutOfBoundsException if {@code index >= count()}. |
| */ |
| @SuppressWarnings("unchecked") |
| @NotNull |
| @Override |
| public <S> S getValue(Type<S> type, int index) { |
| checkArgument(!type.isArray(), "Type must not be an array type"); |
| if (getType().getBaseType() == type) { |
| return (S) values.get(index); |
| } |
| else { |
| return convertTo(type, index); |
| } |
| } |
| |
| @Override |
| public final int count() { |
| return values.size(); |
| } |
| |
| @Override |
| public long size(int index) { |
| return convertTo(Type.STRING, index).length(); |
| } |
| |
| } |