Jabit/core/src/main/java/ch/dissem/bitmessage/utils/Property.java

92 lines
2.8 KiB
Java

/*
* Copyright 2015 Christian Basler
*
* 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 ch.dissem.bitmessage.utils;
import java.util.Arrays;
import java.util.Objects;
/**
* Some property that has a name, a value and/or other properties. This can be used for any purpose, but is for now
* used to contain different status information. It is by default displayed in some JSON inspired human readable
* notation, but you might only want to rely on the 'human readable' part.
* <p>
* If you need a real JSON representation, please add a method <code>toJson()</code>.
* </p>
*/
public class Property {
private String name;
private Object value;
private Property[] properties;
public Property(String name, Object value, Property... properties) {
this.name = name;
this.value = value;
this.properties = properties;
}
public String getName() {
return name;
}
public Object getValue() {
return value;
}
/**
* Returns the property if available or <code>null</code> otherwise.
* Subproperties can be requested by submitting the sequence of properties.
*/
public Property getProperty(String... name) {
if (name == null || name.length == 0) return null;
for (Property p : properties) {
if (Objects.equals(name[0], p.name)) {
if (name.length == 1)
return p;
else
return p.getProperty(Arrays.copyOfRange(name, 1, name.length));
}
}
return null;
}
public Property[] getProperties() {
return properties;
}
@Override
public String toString() {
return toString("");
}
private String toString(String indentation) {
StringBuilder result = new StringBuilder();
result.append(indentation).append(name).append(": ");
if (value != null || properties.length == 0) {
result.append(value);
}
if (properties.length > 0) {
result.append("{\n");
for (Property property : properties) {
result.append(property.toString(indentation + " ")).append('\n');
}
result.append(indentation).append("}");
}
return result.toString();
}
}