nl.open.jwtdependency.com.fasterxml.jackson.databind.node.BinaryNode Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of java-jwt-nodependencies Show documentation

This is a drop in replacement for the auth0 java-jwt library (see https://github.com/auth0/java-jwt). This jar makes sure there are no external dependencies (e.g. fasterXml, Apacha Commons) needed. This is useful when deploying to an application server (e.g. tomcat with Alfreso or Pega).

The newest version!

package com.fasterxml.jackson.databind.node;

import java.io.IOException;
import java.util.Arrays;

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


/**
 * Value node that contains Base64 encoded binary value, which will be
 * output and stored as Json String value.
 */
public class BinaryNode
    extends ValueNode
{
    final static BinaryNode EMPTY_BINARY_NODE = new BinaryNode(new byte[0]);

    protected final byte[] _data;

    public BinaryNode(byte[] data)
    {
        _data = data;
    }

    public BinaryNode(byte[] data, int offset, int length)
    {
        if (offset == 0 && length == data.length) {
            _data = data;
        } else {
            _data = new byte[length];
            System.arraycopy(data, offset, _data, 0, length);
        }
    }

    public static BinaryNode valueOf(byte[] data)
    {
        if (data == null) {
            return null;
        }
        if (data.length == 0) {
            return EMPTY_BINARY_NODE;
        }
        return new BinaryNode(data);
    }

    public static BinaryNode valueOf(byte[] data, int offset, int length)
    {
        if (data == null) {
            return null;
        }
        if (length == 0) {
            return EMPTY_BINARY_NODE;
        }
        return new BinaryNode(data, offset, length);
    }

    @Override
    public JsonNodeType getNodeType()
    {
        return JsonNodeType.BINARY;
    }

    @Override
    public JsonToken asToken() {
        /* No distinct type; could use one for textual values,
         * but given that it's not in text form at this point,
         * embedded-object is closest
         */
        return JsonToken.VALUE_EMBEDDED_OBJECT;
    }

    /**
     *
     * Note: caller is not to modify returned array in any way, since
     * it is not a copy but reference to the underlying byte array.
     */
    @Override
    public byte[] binaryValue() { return _data; }

    /**
     * Hmmh. This is not quite as efficient as using {@link #serialize},
     * but will work correctly.
     */
    @Override
    public String asText() {
        return Base64Variants.getDefaultVariant().encode(_data, false);
    }

    @Override
    public final void serialize(JsonGenerator jg, SerializerProvider provider)
        throws IOException, JsonProcessingException
    {
        jg.writeBinary(provider.getConfig().getBase64Variant(),
                _data, 0, _data.length);
    }

    @Override
    public boolean equals(Object o)
    {
        if (o == this) return true;
        if (o == null) return false;
        if (!(o instanceof BinaryNode)) {
            return false;
        }
        return Arrays.equals(((BinaryNode) o)._data, _data);
    }

    @Override
    public int hashCode() {
        return (_data == null) ? -1 : _data.length;
    }

    /**
     * Different from other values, since contents need to be surrounded
     * by (double) quotes.
     */
    @Override
    public String toString()
    {
        return Base64Variants.getDefaultVariant().encode(_data, true);
    }
}