com.facebook.presto.jdbc.internal.jackson.databind.node.IntNode Maven / Gradle / Ivy
package com.facebook.presto.jdbc.internal.jackson.databind.node;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;
import com.facebook.presto.jdbc.internal.jackson.core.*;
import com.facebook.presto.jdbc.internal.jackson.core.io.NumberOutput;
import com.facebook.presto.jdbc.internal.jackson.databind.SerializerProvider;
/**
* Numeric node that contains simple 32-bit integer values.
*/
public class IntNode
extends NumericNode
{
// // // Let's cache small set of common value
final static int MIN_CANONICAL = -1;
final static int MAX_CANONICAL = 10;
private final static IntNode[] CANONICALS;
static {
int count = MAX_CANONICAL - MIN_CANONICAL + 1;
CANONICALS = new IntNode[count];
for (int i = 0; i < count; ++i) {
CANONICALS[i] = new IntNode(MIN_CANONICAL + i);
}
}
/**
* Integer value this node contains
*/
protected final int _value;
/*
************************************************
* Construction
************************************************
*/
public IntNode(int v) { _value = v; }
public static IntNode valueOf(int i) {
if (i > MAX_CANONICAL || i < MIN_CANONICAL) return new IntNode(i);
return CANONICALS[i - MIN_CANONICAL];
}
/*
/**********************************************************
/* BaseJsonNode extended API
/**********************************************************
*/
@Override public JsonToken asToken() { return JsonToken.VALUE_NUMBER_INT; }
@Override
public JsonParser.NumberType numberType() { return JsonParser.NumberType.INT; }
/*
/**********************************************************
/* Overrridden JsonNode methods
/**********************************************************
*/
@Override
public boolean isIntegralNumber() { return true; }
@Override
public boolean isInt() { return true; }
@Override public boolean canConvertToInt() { return true; }
@Override public boolean canConvertToLong() { return true; }
@Override
public Number numberValue() {
return Integer.valueOf(_value);
}
@Override
public short shortValue() { return (short) _value; }
@Override
public int intValue() { return _value; }
@Override
public long longValue() { return (long) _value; }
@Override
public float floatValue() { return (float) _value; }
@Override
public double doubleValue() { return (double) _value; }
@Override
public BigDecimal decimalValue() { return BigDecimal.valueOf(_value); }
@Override
public BigInteger bigIntegerValue() { return BigInteger.valueOf(_value); }
@Override
public String asText() {
return NumberOutput.toString(_value);
}
@Override
public boolean asBoolean(boolean defaultValue) {
return _value != 0;
}
@Override
public final void serialize(JsonGenerator jg, SerializerProvider provider)
throws IOException, JsonProcessingException
{
jg.writeNumber(_value);
}
@Override
public boolean equals(Object o)
{
if (o == this) return true;
if (o == null) return false;
if (o instanceof IntNode) {
return ((IntNode) o)._value == _value;
}
return false;
}
@Override
public int hashCode() { return _value; }
}
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