org.graylog2.jackson.SemverDeserializer Maven / Gradle / Ivy
/*
* Copyright (C) 2020 Graylog, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* .
*/
package org.graylog2.jackson;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.core.JsonTokenId;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import com.vdurmont.semver4j.Semver;
import com.vdurmont.semver4j.SemverException;
import java.io.IOException;
public class SemverDeserializer extends StdDeserializer {
private final Semver.SemverType semverType;
public SemverDeserializer() {
this(Semver.SemverType.NPM);
}
public SemverDeserializer(Semver.SemverType semverType) {
super(Semver.class);
this.semverType = semverType;
}
@Override
public Semver deserialize(final JsonParser p, final DeserializationContext ctxt) throws IOException {
switch (p.getCurrentTokenId()) {
case JsonTokenId.ID_STRING:
case JsonTokenId.ID_NUMBER_INT:
final String str = p.getText().trim();
try {
return buildSemver(str);
} catch (SemverException e) {
ctxt.reportMappingException(e.getMessage());
}
default:
throw ctxt.wrongTokenException(p, JsonToken.VALUE_STRING, "expected String or Number");
}
}
private Semver buildSemver(String s) {
return new Semver(s, semverType);
}
}