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JsonNode.java
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JsonNode.java
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/**
* Copyright (C) 2020 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jsonld.serialization.model;
import cz.cvut.kbss.jsonld.exception.JsonLdSerializationException;
import cz.cvut.kbss.jsonld.serialization.JsonGenerator;
import java.io.IOException;
import java.util.Objects;
public abstract class JsonNode {
private final String name;
private final boolean valueNode;
JsonNode() {
this.name = null;
this.valueNode = true;
}
public JsonNode(String name) {
this.name = Objects.requireNonNull(name);
this.valueNode = false;
}
public String getName() {
return name;
}
public boolean isValueNode() {
return valueNode;
}
public void write(JsonGenerator writer) {
try {
if (!valueNode) {
writeKey(writer);
}
writeValue(writer);
} catch (IOException e) {
throw new JsonLdSerializationException("Exception during serialization of node " + this, e);
}
}
void writeKey(JsonGenerator writer) throws IOException {
writer.writeFieldName(name);
}
abstract void writeValue(JsonGenerator writer) throws IOException;
@Override
public String toString() {
return name == null ? "{" : "{\"" + name + "\": ";
}
}