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JsonYamlMapping.java
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JsonYamlMapping.java
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/**
* Copyright (c) 2016-2024, Mihai Emil Andronache
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
package com.amihaiemil.eoyaml;
import com.amihaiemil.eoyaml.exceptions.YamlPrintException;
import javax.json.JsonObject;
import java.io.IOException;
import java.io.StringWriter;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* Representation of a {@link javax.json.JsonObject} as YAML Mapping.
* @author criske
* @version $Id$
* @since 5.1.7
*/
final class JsonYamlMapping extends BaseYamlMapping {
/**
* Json object being mapped.
*/
private final JsonObject object;
/**
* Ctor.
* @param object Json object being mapped.
*/
JsonYamlMapping(final JsonObject object) {
this.object = object;
}
@Override
public Set<YamlNode> keys() {
final Set<YamlNode> keys = new LinkedHashSet<>();
this.object.keySet().forEach(key -> keys
.add(new PlainStringScalar(key)));
return keys;
}
@Override
public YamlNode value(final YamlNode key) {
final String scalar = key.asScalar().value();
final YamlNode value;
if(scalar == null) {
value = null;
} else {
value = new JsonYamlDump(this.object.get(scalar)).dump();
}
return value;
}
@Override
public Comment comment() {
return new Comment() {
@Override
public YamlNode yamlNode() {
return JsonYamlMapping.this;
}
@Override
public String value() {
return "";
}
};
}
@Override
public String toString() {
final StringWriter writer = new StringWriter();
final YamlPrinter printer = new RtYamlPrinter(writer, true);
try {
printer.print(this);
return writer.toString();
} catch (final IOException ex) {
throw new YamlPrintException(
"IOException when printing YAML", ex
);
}
}
}