com.tikinou.schedulesdirect.core.jackson.deser.BooleanYNDeserializer.java Source code

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Here is the source code for com.tikinou.schedulesdirect.core.jackson.deser.BooleanYNDeserializer.java

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/*
 * Copyright (c) 2014 TIKINOU LLC
 *
 * 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 com.tikinou.schedulesdirect.core.jackson.deser;

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;

import java.io.IOException;

/**
 * @author Sebastien Astie
 */
public class BooleanYNDeserializer extends JsonDeserializer<Boolean> {
    @Override
    public Boolean deserialize(JsonParser jp, DeserializationContext ctxt)
            throws IOException, JsonProcessingException {
        JsonToken t = jp.getCurrentToken();
        if (t == JsonToken.VALUE_TRUE) {
            return Boolean.TRUE;
        }
        if (t == JsonToken.VALUE_FALSE) {
            return Boolean.FALSE;
        }
        if (t == JsonToken.VALUE_NULL) {
            return null;
        }
        if (t == JsonToken.VALUE_NUMBER_INT) {
            return (jp.getIntValue() != 0);
        }
        if (t == JsonToken.VALUE_STRING) {
            String text = jp.getText().trim();
            if ("true".equals(text)) {
                return Boolean.TRUE;
            }
            if ("false".equals(text) || text.length() == 0) {
                return Boolean.FALSE;
            }

            if ("N".equalsIgnoreCase(text) || text.length() == 0) {
                return Boolean.FALSE;
            }

            if ("Y".equalsIgnoreCase(text)) {
                return Boolean.TRUE;
            }
            throw ctxt.weirdStringException(text, Boolean.class, "only \"true\" or \"false\" recognized");
        }
        // Otherwise, no can do:
        throw ctxt.mappingException(Boolean.class);
    }
}