io.cdap.re

Class RequestExtractor

java.lang.Object

io.cdap.re.RequestExtractor

public final class RequestExtractor
extends Object

This class RequestExtractor provides utility functions for extracting different aspects of the request. It provides functionality to extract headers and content.

Field Summary

Fields

Modifier and Type	Field and Description
static String	CHARSET
static String	CONTENT_TYPE

Constructor Summary

Constructors

Constructor and Description
RequestExtractor(io.cdap.cdap.api.service.http.HttpServiceRequest request)

Method Summary

Modifier and Type	Method and Description
byte[]	getContent()
String	getContent(Charset charset) Returns the content by converting it to UNICODE from the provided charset.
String	getContent(String charset)
<T> T	getHeader(String name, String defaultValue) Extracts the HTTP header, if the header is not present, then default value is returned.
boolean	hasHeader(String name) Checks if the request has a HTTP header.
boolean	isContentType(String expectedType) Checks if the 'Content-Type' matches expected.

Methods inherited from class java.lang.Object

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

Field Detail

CONTENT_TYPE

public static final String CONTENT_TYPE

See Also:

Constant Field Values

CHARSET

public static final String CHARSET

See Also:

Constant Field Values

Constructor Detail

RequestExtractor

public RequestExtractor(io.cdap.cdap.api.service.http.HttpServiceRequest request)

Method Detail

hasHeader

public boolean hasHeader(String name)

Checks if the request has a HTTP header.

Parameters:

name - of the header to be checked.

Returns:

true if header is found, false otherwise.

getHeader

public <T> T getHeader(String name,
                       String defaultValue)

Extracts the HTTP header, if the header is not present, then default value is returned.

Parameters:

name - of the HTTP header to be extracted.

defaultValue - value to returned if header doesn't exist.

Returns:

value defined for the header.

getContent

public byte[] getContent()

Returns:

Content as received by the HTTP multipart/form body.

getContent

public String getContent(Charset charset)

Returns the content by converting it to UNICODE from the provided charset.

Parameters:

charset - of the content being extracted and converted to UNICODE.

Returns:

UNICODE representation of the content, else null.

getContent

public String getContent(String charset)

isContentType

public boolean isContentType(String expectedType)

Checks if the 'Content-Type' matches expected.

Parameters:

expectedType - to be checked for content type.

Returns:

true if it matches, false if it's not present or doesn't match expected.