com.prosysopc.ua.stack.encoding.json

Class JsonDecoder

java.lang.Object

com.prosysopc.ua.stack.encoding.AbstractDecoder

com.prosysopc.ua.stack.encoding.json.JsonDecoder

All Implemented Interfaces:

IDecoder

public class JsonDecoder
extends AbstractDecoder
implements IDecoder

Decodes OPC UA values encoded as JSON.

Field Summary

Fields inherited from class com.prosysopc.ua.stack.encoding.AbstractDecoder

ctx

Constructor Summary

Constructors

Constructor and Description
JsonDecoder(EncoderContext ctx) Creates new JsonDecoder using the given EncoderContext.

Method Summary

Modifier and Type	Method and Description
<T> T	get(String fieldName, UaNodeId dataTypeId, int dimensions)
ExtensionObject	getExtensionObject(String fieldName) getExtensionObject.
ExtensionObject[]	getExtensionObjectArray(String fieldName) getExtensionObjectArray.
Set<String>	getFieldNames()
int[]	getInt32Array_(String fieldName) getInt32Array_.
String	getJson(String fieldName)
int	getJsonArraySize() Returns the size of the root JSON array or -1 if current root JSON element is not an array.
Variant	getVariant(String fieldName) getVariant.
Variant[]	getVariantArray(String fieldName) getVariantArray.
void	popElementStack()
void	pushElementStack(int index)
void	pushElementStack(String fieldName)
void	setReadable(InputStream in)

Methods inherited from class com.prosysopc.ua.stack.encoding.AbstractDecoder

assertArrayLength, assertByteStringLength, assertStringLength, emptyArrayForClass, getEncoderContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.prosysopc.ua.stack.encoding.IDecoder

getBoolean, getBooleanArray, getByte, getByteArray, getByteString, getByteStringArray, getDataValue, getDataValueArray, getDateTime, getDateTimeArray, getDiagnosticInfo, getDiagnosticInfoArray, getDouble, getDoubleArray, getEncoderContext, getExpandedNodeId, getExpandedNodeIdArray, getFloat, getFloatArray, getGuid, getGuidArray, getInt16, getInt16Array, getInt32, getInt32Array, getInt64, getInt64Array, getLocalizedText, getLocalizedTextArray, getNodeId, getNodeIdArray, getQualifiedName, getQualifiedNameArray, getSByte, getSByteArray, getStatusCode, getStatusCodeArray, getString, getStringArray, getUInt16, getUInt16Array, getUInt32, getUInt32Array, getUInt64, getUInt64Array, getXmlElement, getXmlElementArray

Constructor Detail

JsonDecoder

public JsonDecoder(EncoderContext ctx)

Creates new JsonDecoder using the given EncoderContext.

Method Detail

get

public <T> T get(String fieldName,
                 UaNodeId dataTypeId,
                 int dimensions)
          throws DecodingException

Specified by:

get in interface IDecoder

Throws:

DecodingException

getExtensionObject

public ExtensionObject getExtensionObject(String fieldName)
                                   throws DecodingException

Description copied from interface: IDecoder

getExtensionObject.

Specified by:

getExtensionObject in interface IDecoder

Parameters:

fieldName - a String object.

Returns:

a ExtensionObject object.

Throws:

DecodingException - if any.

getExtensionObjectArray

public ExtensionObject[] getExtensionObjectArray(String fieldName)
                                          throws DecodingException

Description copied from interface: IDecoder

getExtensionObjectArray.

Specified by:

getExtensionObjectArray in interface IDecoder

Parameters:

fieldName - a String object.

Returns:

an array of ExtensionObject objects.

Throws:

DecodingException - if any.

getFieldNames

public Set<String> getFieldNames()
                          throws DecodingException

Throws:

DecodingException

getInt32Array_

public int[] getInt32Array_(String fieldName)
                     throws DecodingException

Description copied from interface: IDecoder

getInt32Array_.

Specified by:

getInt32Array_ in interface IDecoder

Parameters:

fieldName - a String object.

Returns:

an array of int.

Throws:

DecodingException - if any.

getJson

public String getJson(String fieldName)
               throws DecodingException

Throws:

DecodingException

getJsonArraySize

public int getJsonArraySize()
                     throws DecodingException

Returns the size of the root JSON array or -1 if current root JSON element is not an array.

Returns:

size of JSON array

Throws:

DecodingException

getVariant

public Variant getVariant(String fieldName)
                   throws DecodingException

Description copied from interface: IDecoder

getVariant.

Specified by:

getVariant in interface IDecoder

Parameters:

fieldName - a String object.

Returns:

a Variant object.

Throws:

DecodingException - if any.

getVariantArray

public Variant[] getVariantArray(String fieldName)
                          throws DecodingException

Description copied from interface: IDecoder

getVariantArray.

Specified by:

getVariantArray in interface IDecoder

Parameters:

fieldName - a String object.

Returns:

an array of Variant objects.

Throws:

DecodingException - if any.

popElementStack

public void popElementStack()

pushElementStack

public void pushElementStack(int index)
                      throws DecodingException

Throws:

DecodingException

pushElementStack

public void pushElementStack(String fieldName)
                      throws DecodingException

Throws:

DecodingException

setReadable

public void setReadable(InputStream in)