com.fasterxml.jackson.databind.node.DecimalNode.java Source code

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Here is the source code for com.fasterxml.jackson.databind.node.DecimalNode.java

Source

package com.fasterxml.jackson.databind.node;

import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;

import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;

/**
 * Numeric node that contains values that do not fit in simple
 * integer (int, long) or floating point (double) values.
 */
public class DecimalNode extends NumericNode {
    public static final DecimalNode ZERO = new DecimalNode(BigDecimal.ZERO);

    private final static BigDecimal MIN_INTEGER = BigDecimal.valueOf(Integer.MIN_VALUE);
    private final static BigDecimal MAX_INTEGER = BigDecimal.valueOf(Integer.MAX_VALUE);
    private final static BigDecimal MIN_LONG = BigDecimal.valueOf(Long.MIN_VALUE);
    private final static BigDecimal MAX_LONG = BigDecimal.valueOf(Long.MAX_VALUE);

    final protected BigDecimal _value;

    /* 
    /**********************************************************
    /* Construction
    /**********************************************************
     */

    public DecimalNode(BigDecimal v) {
        _value = v;
    }

    public static DecimalNode valueOf(BigDecimal d) {
        return new DecimalNode(d);
    }

    /* 
    /**********************************************************
    /* BaseJsonNode extended API
    /**********************************************************
     */

    @Override
    public JsonToken asToken() {
        return JsonToken.VALUE_NUMBER_FLOAT;
    }

    @Override
    public JsonParser.NumberType numberType() {
        return JsonParser.NumberType.BIG_DECIMAL;
    }

    /* 
    /**********************************************************
    /* Overrridden JsonNode methods
    /**********************************************************
     */

    @Override
    public boolean isFloatingPointNumber() {
        return true;
    }

    @Override
    public boolean isBigDecimal() {
        return true;
    }

    @Override
    public boolean canConvertToInt() {
        return (_value.compareTo(MIN_INTEGER) >= 0) && (_value.compareTo(MAX_INTEGER) <= 0);
    }

    @Override
    public boolean canConvertToLong() {
        return (_value.compareTo(MIN_LONG) >= 0) && (_value.compareTo(MAX_LONG) <= 0);
    }

    @Override
    public Number numberValue() {
        return _value;
    }

    @Override
    public short shortValue() {
        return _value.shortValue();
    }

    @Override
    public int intValue() {
        return _value.intValue();
    }

    @Override
    public long longValue() {
        return _value.longValue();
    }

    @Override
    public BigInteger bigIntegerValue() {
        return _value.toBigInteger();
    }

    @Override
    public float floatValue() {
        return _value.floatValue();
    }

    @Override
    public double doubleValue() {
        return _value.doubleValue();
    }

    @Override
    public BigDecimal decimalValue() {
        return _value;
    }

    @Override
    public String asText() {
        return _value.toString();
    }

    @Override
    public final void serialize(JsonGenerator jgen, SerializerProvider provider)
            throws IOException, JsonProcessingException {
        // 07-Jul-2013, tatu: Should be handled by propagating setting to JsonGenerator
        //    so this should not be needed:
        /*
        if (provider.isEnabled(SerializationFeature.WRITE_BIGDECIMAL_AS_PLAIN)) {
        if (!(jgen instanceof TokenBuffer)) { // [Issue#232]
            jgen.writeNumber(((BigDecimal) _value).toPlainString());
            return;
        }
        }
        */
        jgen.writeNumber(_value);
    }

    @Override
    public boolean equals(Object o) {
        if (o == this)
            return true;
        if (o == null)
            return false;
        if (o instanceof DecimalNode) {
            return ((DecimalNode) o)._value.compareTo(_value) == 0;
        }
        return false;
    }

    @Override
    public int hashCode() {
        return Double.valueOf(doubleValue()).hashCode();
    }
}