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OAK-6311 : Move generic part of PropertyStateValue and PropertyValues…
… to oak-store-spi git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1797907 13f79535-47bb-0310-9956-ffa450edef68
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165 changes: 165 additions & 0 deletions
165
oak-core/src/main/java/org/apache/jackrabbit/oak/query/ValueConverter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,165 @@ | ||
| /* | ||
| * 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.query; | ||
|
|
||
| import java.net.URI; | ||
| import javax.annotation.CheckForNull; | ||
| import javax.annotation.Nonnull; | ||
| import javax.annotation.Nullable; | ||
| import javax.jcr.PropertyType; | ||
|
|
||
| import org.apache.jackrabbit.oak.api.Blob; | ||
| import org.apache.jackrabbit.oak.api.PropertyValue; | ||
| import org.apache.jackrabbit.oak.api.Type; | ||
| import org.apache.jackrabbit.oak.namepath.NamePathMapper; | ||
| import org.apache.jackrabbit.oak.plugins.memory.PropertyValues; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| public class ValueConverter { | ||
|
|
||
| private static final Logger log = LoggerFactory.getLogger(ValueConverter.class); | ||
|
|
||
| private ValueConverter() {} | ||
|
|
||
| /** | ||
| * Converts the given value to a value of the specified target type. The | ||
| * conversion is performed according to the rules described in | ||
| * "3.6.4 Property Type Conversion" in the JCR 2.0 specification. | ||
| * | ||
| * @param value the value to convert | ||
| * @param targetType the target property type | ||
| * @param mapper the name mapper or {@code null} if no name/path mapping is required. | ||
| * @return the converted value | ||
| * @throws IllegalArgumentException if mapping is illegal | ||
| */ | ||
| public static PropertyValue convert(@Nonnull PropertyValue value, int targetType, @Nullable NamePathMapper mapper) { | ||
| int sourceType = value.getType().tag(); | ||
| if (sourceType == targetType) { | ||
| return value; | ||
| } | ||
| switch (targetType) { | ||
| case PropertyType.BINARY: | ||
| Blob blob = value.getValue(Type.BINARY); | ||
| return PropertyValues.newBinary(blob); | ||
| case PropertyType.BOOLEAN: | ||
| return PropertyValues.newBoolean(value.getValue(Type.BOOLEAN)); | ||
| case PropertyType.DATE: | ||
| return PropertyValues.newDate(value.getValue(Type.DATE)); | ||
| case PropertyType.DOUBLE: | ||
| return PropertyValues.newDouble(value.getValue(Type.DOUBLE)); | ||
| case PropertyType.LONG: | ||
| return PropertyValues.newLong(value.getValue(Type.LONG)); | ||
| case PropertyType.DECIMAL: | ||
| return PropertyValues.newDecimal(value.getValue(Type.DECIMAL)); | ||
| } | ||
| // for other types, the value is first converted to a string | ||
| String v = value.getValue(Type.STRING); | ||
| switch (targetType) { | ||
| case PropertyType.STRING: | ||
| return PropertyValues.newString(v); | ||
| case PropertyType.PATH: | ||
| switch (sourceType) { | ||
| case PropertyType.BINARY: | ||
| case PropertyType.STRING: | ||
| case PropertyType.NAME: | ||
| return PropertyValues.newPath(v); | ||
| case PropertyType.URI: | ||
| URI uri = URI.create(v); | ||
| if (uri.isAbsolute()) { | ||
| // uri contains scheme | ||
| throw new IllegalArgumentException( | ||
| "Failed to convert URI " + v + " to PATH"); | ||
| } | ||
| String p = uri.getPath(); | ||
| if (p.startsWith("./")) { | ||
| p = p.substring(2); | ||
| } | ||
| return PropertyValues.newPath(v); | ||
| } | ||
| break; | ||
| case PropertyType.NAME: | ||
| switch (sourceType) { | ||
| case PropertyType.BINARY: | ||
| case PropertyType.STRING: | ||
| case PropertyType.PATH: | ||
| // path might be a name (relative path of length 1) | ||
| // try conversion via string | ||
| return PropertyValues.newName(getOakPath(v, mapper)); | ||
| case PropertyType.URI: | ||
| URI uri = URI.create(v); | ||
| if (uri.isAbsolute()) { | ||
| // uri contains scheme | ||
| throw new IllegalArgumentException( | ||
| "Failed to convert URI " + v + " to PATH"); | ||
| } | ||
| String p = uri.getPath(); | ||
| if (p.startsWith("./")) { | ||
| p = p.substring(2); | ||
| } | ||
| return PropertyValues.newName(getOakPath(v, mapper)); | ||
| } | ||
| break; | ||
| case PropertyType.REFERENCE: | ||
| switch (sourceType) { | ||
| case PropertyType.BINARY: | ||
| case PropertyType.STRING: | ||
| case PropertyType.WEAKREFERENCE: | ||
| return PropertyValues.newReference(v); | ||
| } | ||
| break; | ||
| case PropertyType.WEAKREFERENCE: | ||
| switch (sourceType) { | ||
| case PropertyType.BINARY: | ||
| case PropertyType.STRING: | ||
| case PropertyType.REFERENCE: | ||
| return PropertyValues.newWeakReference(v); | ||
| } | ||
| break; | ||
| case PropertyType.URI: | ||
| switch (sourceType) { | ||
| case PropertyType.BINARY: | ||
| case PropertyType.STRING: | ||
| return PropertyValues.newUri(v); | ||
| case PropertyType.NAME: | ||
| // prefix name with "./" (JCR 2.0 spec 3.6.4.8) | ||
| return PropertyValues.newUri("./" + v); | ||
| case PropertyType.PATH: | ||
| // prefix name with "./" (JCR 2.0 spec 3.6.4.9) | ||
| return PropertyValues.newUri("./" + v); | ||
| } | ||
| } | ||
| throw new IllegalArgumentException( | ||
| "Unsupported conversion from property type " + | ||
| PropertyType.nameFromValue(sourceType) + | ||
| " to property type " + | ||
| PropertyType.nameFromValue(targetType)); | ||
| } | ||
|
|
||
| private static String getOakPath(@Nonnull String jcrPath, @CheckForNull NamePathMapper mapper) { | ||
| if (mapper == null) { | ||
| // to simplify testing, a getNamePathMapper isn't required | ||
| return jcrPath; | ||
| } | ||
| String p = mapper.getOakPath(jcrPath); | ||
| if (p == null) { | ||
| throw new IllegalArgumentException("Not a valid JCR path: " | ||
| + jcrPath); | ||
| } | ||
| return p; | ||
| } | ||
| } |
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