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[proxima-core] #30 add proxy attributes to entities
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111 changes: 111 additions & 0 deletions
111
core/src/main/java/cz/o2/proxima/repository/AttributeDescriptorBase.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| /** | ||
| * Copyright 2017 O2 Czech Republic, a.s. | ||
| * | ||
| * Licensed 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 cz.o2.proxima.repository; | ||
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| import cz.o2.proxima.scheme.ValueSerializer; | ||
| import cz.o2.proxima.storage.OnlineAttributeWriter; | ||
| import java.net.URI; | ||
| import java.util.Objects; | ||
| import lombok.Getter; | ||
| import lombok.Setter; | ||
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| /** | ||
| * Base class for {@link AttributeDescriptorImpl} and {@link AttributeProxyDescriptorImpl}. | ||
| */ | ||
| public abstract class AttributeDescriptorBase<T> implements AttributeDescriptor<T> { | ||
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| @Getter | ||
| protected final String entity; | ||
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| @Getter | ||
| protected final String name; | ||
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| @Getter | ||
| protected final URI schemeURI; | ||
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| @Getter | ||
| protected final boolean proxy; | ||
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| @Getter | ||
| protected final boolean wildcard; | ||
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| @Getter | ||
| protected final ValueSerializer<T> valueSerializer; | ||
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| @Getter | ||
| @Setter | ||
| protected OnlineAttributeWriter writer = null; | ||
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| public AttributeDescriptorBase( | ||
| String name, String entity, URI schemeURI, | ||
| ValueSerializer<T> valueSerializer) { | ||
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| this.name = Objects.requireNonNull(name); | ||
| this.entity = Objects.requireNonNull(entity); | ||
| this.schemeURI = Objects.requireNonNull(schemeURI); | ||
| this.wildcard = this.name.endsWith(".*"); | ||
| this.proxy = false; | ||
| this.valueSerializer = Objects.requireNonNull(valueSerializer); | ||
| if (this.wildcard) { | ||
| if (name.length() < 3 | ||
| || name.substring(0, name.length() - 1).contains("*") | ||
| || name.charAt(name.length() - 2) != '.') { | ||
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| throw new IllegalArgumentException( | ||
| "Please specify wildcard attributes only in the format `<name>.*; for now. " | ||
| + "That is - wildcard attributes can contain only single asterisk " | ||
| + "right after a dot at the end of the attribute name. " | ||
| + "This is implementation constraint for now."); | ||
| } | ||
| } | ||
| } | ||
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| public AttributeDescriptorBase(String name, AttributeDescriptorBase<T> target) { | ||
| this.name = Objects.requireNonNull(name); | ||
| this.entity = target.getEntity(); | ||
| this.schemeURI = target.getSchemeURI(); | ||
| this.proxy = true; | ||
| this.wildcard = target.isWildcard(); | ||
| this.valueSerializer = target.getValueSerializer(); | ||
| } | ||
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| @Override | ||
| public boolean equals(Object obj) { | ||
| if (obj instanceof AttributeDescriptor) { | ||
| AttributeDescriptor other = (AttributeDescriptor) obj; | ||
| return Objects.equals(other.getEntity(), entity) && Objects.equals(other.getName(), name); | ||
| } | ||
| return false; | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(entity, name); | ||
| } | ||
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| /** | ||
| * Retrieve name of the attribute if not wildcard, otherwise | ||
| * retrieve the prefix without the last asterisk. | ||
| */ | ||
| @Override | ||
| public String toAttributePrefix(boolean includeLastDot) { | ||
| if (isWildcard()) { | ||
| return name.substring(0, name.length() - (includeLastDot ? 1 : 2)); | ||
| } | ||
| return name; | ||
| } | ||
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| } |
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