nl.vpro.jackson2.LenientBooleanDeserializer Maven / Gradle / Ivy
package nl.vpro.jackson2;
import java.io.IOException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
/**
* @author Michiel Meeuwissen
* @since 2.3
*/
public class LenientBooleanDeserializer extends JsonDeserializer {
public static final LenientBooleanDeserializer INSTANCE = new LenientBooleanDeserializer();
private LenientBooleanDeserializer() {
}
@Override
public Boolean deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
JsonToken token = jsonParser.getCurrentToken();
if (jsonParser.isNaN()) {
return false;
}
if (token.isBoolean()) {
return jsonParser.getBooleanValue();
} else if (token.isNumeric()) {
return jsonParser.getNumberValue().longValue() != 0;
} else {
String text = jsonParser.getText().toLowerCase();
switch(text) {
case "true":
case "1":
return true;
default:
return false;
}
}
}
}