com.amazonaws.transform

Class JsonUnmarshallerContext

java.lang.Object

com.amazonaws.transform.JsonUnmarshallerContext

public class JsonUnmarshallerContext
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
com.fasterxml.jackson.core.JsonToken	currentToken The current JsonToken that the private JsonParser is currently pointing to.

Constructor Summary

Constructors

Constructor and Description
JsonUnmarshallerContext(com.fasterxml.jackson.core.JsonParser jsonParser)
JsonUnmarshallerContext(com.fasterxml.jackson.core.JsonParser jsonParser, HttpResponse httpResponse)

Method Summary

Modifier and Type	Method and Description
int	getCurrentDepth() Returns the element depth of the parser's current position in the JSON document being parsed.
String	getCurrentParentElement() Returns the name of the JSON field that is the nearest parent of the current context.
String	getHeader(String header) Returns the value of the header with the specified name from the response, or null if not present.
HttpResponse	getHttpResponse()
com.fasterxml.jackson.core.JsonParser	getJsonParser()
String	getLastParsedParentElement() This will return the deleted string in stackString when doing update on the stack
Map<String,String>	getMetadata() Returns any metadata collected through metadata expressions while this context was reading the JSON events from the JSON document.
boolean	isStartOfDocument()
com.fasterxml.jackson.core.JsonToken	nextToken()
com.fasterxml.jackson.core.JsonToken	peek()
String	readText() Returns the text of the current token, or throws an exception if the current token does not contain text (ex: '{', '}', etc.).
void	registerMetadataExpression(String expression, int targetDepth, String storageKey) Registers an expression, which if matched, will cause the data for the matching element to be stored in the metadata map under the specified key.
boolean	testExpression(String expression) Tests the specified expression (a JSON field name) against the current position in the JSON document being parsed.
boolean	testExpression(String expression, int stackDepth) Tests the specified expression (a JSON field name) against the current position in the JSON document being parsed, and restricts the expression to matching at the specified stack depth.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

currentToken

public com.fasterxml.jackson.core.JsonToken currentToken

The current JsonToken that the private JsonParser is currently pointing to.

Constructor Detail

JsonUnmarshallerContext

public JsonUnmarshallerContext(com.fasterxml.jackson.core.JsonParser jsonParser)

JsonUnmarshallerContext

public JsonUnmarshallerContext(com.fasterxml.jackson.core.JsonParser jsonParser,
                               HttpResponse httpResponse)

Method Detail

getHeader

public String getHeader(String header)

Returns the value of the header with the specified name from the response, or null if not present.

Parameters:

header - The name of the header to lookup.

Returns:

The value of the header with the specified name from the response, or null if not present.

getHttpResponse

public HttpResponse getHttpResponse()

getCurrentDepth

public int getCurrentDepth()

Returns the element depth of the parser's current position in the JSON document being parsed.

Returns:

The element depth of the parser's current position in the JSON document being parsed.

readText

public String readText()
                throws IOException

Returns the text of the current token, or throws an exception if the current token does not contain text (ex: '{', '}', etc.).

Returns:

The text of the current token.

Throws:

IOException

isStartOfDocument

public boolean isStartOfDocument()

testExpression

public boolean testExpression(String expression)

Tests the specified expression (a JSON field name) against the current position in the JSON document being parsed.

Parameters:

expression - The field name to test.

Returns:

True if the expression matches the current document position, otherwise false.

getCurrentParentElement

public String getCurrentParentElement()

Returns the name of the JSON field that is the nearest parent of the current context.

testExpression

public boolean testExpression(String expression,
                              int stackDepth)

Tests the specified expression (a JSON field name) against the current position in the JSON document being parsed, and restricts the expression to matching at the specified stack depth.

Parameters:

expression - The field name to test.

stackDepth - The depth in the stack representing where the expression must start matching in order for this method to return true.

Returns:

True if the specified expression matches the current position in the JSON document, starting from the specified depth.

nextToken

public com.fasterxml.jackson.core.JsonToken nextToken()
                                               throws IOException

Throws:

IOException

peek

public com.fasterxml.jackson.core.JsonToken peek()
                                          throws IOException

Throws:

IOException

getJsonParser

public com.fasterxml.jackson.core.JsonParser getJsonParser()

getMetadata

public Map<String,String> getMetadata()

Returns any metadata collected through metadata expressions while this context was reading the JSON events from the JSON document.

Returns:

A map of any metadata collected through metadata expressions while this context was reading the JSON document.

registerMetadataExpression

public void registerMetadataExpression(String expression,
                                       int targetDepth,
                                       String storageKey)

Registers an expression, which if matched, will cause the data for the matching element to be stored in the metadata map under the specified key.

Parameters:

expression - The expression an element must match in order for it's data to be pulled out and stored in the metadata map.

targetDepth - The depth in the JSON document where the expression match must start.

storageKey - The key under which to store the matching element's data.

toString

public String toString()

Overrides:

toString in class Object

getLastParsedParentElement

public String getLastParsedParentElement()

This will return the deleted string in stackString when doing update on the stack