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; } /** *<p> * 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); } }