Package com.google.api.client.http

Class AbstractHttpContent

java.lang.Object

com.google.api.client.http.AbstractHttpContent

All Implemented Interfaces:

HttpContent, StreamingContent

Direct Known Subclasses:

AbstractXmlHttpContent, JsonHttpContent, MultipartContent, ProtoHttpContent, UrlEncodedContent

public abstract class AbstractHttpContent
extends java.lang.Object
implements HttpContent

Abstract implementation of an HTTP content with typical options.

Implementation is not thread-safe.

Since:

1.5

Field Summary

Fields

Modifier and Type	Field	Description
private long	computedLength	Cached value for the computed length from computeLength().
private HttpMediaType	mediaType	Media type used for the Content-Type header or null for none.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractHttpContent(HttpMediaType mediaType)
protected	AbstractHttpContent(java.lang.String mediaType)

Method Summary

Modifier and Type	Method	Description
protected long	computeLength()	Computes and returns the content length or less than zero if not known.
static long	computeLength(HttpContent content)	Returns the computed content length based using IOUtils.computeLength(StreamingContent) or instead -1 if HttpContent.retrySupported() is false because the stream must not be read twice.
protected java.nio.charset.Charset	getCharset()	Returns the charset specified in the media type or ISO_8859_1 if not specified.
long	getLength()	Default implementation calls computeLength() once and caches it for future invocations, but subclasses may override.
HttpMediaType	getMediaType()	Returns the media type to use for the Content-Type header, or null if unspecified.
java.lang.String	getType()	Returns the content type or null for none.
boolean	retrySupported()	Default implementation returns true, but subclasses may override.
AbstractHttpContent	setMediaType(HttpMediaType mediaType)	Sets the media type to use for the Content-Type header, or null if unspecified.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.api.client.http.HttpContent

writeTo

Field Detail

mediaType

private HttpMediaType mediaType

Media type used for the Content-Type header or null for none.

computedLength

private long computedLength

Cached value for the computed length from computeLength().

Constructor Detail

AbstractHttpContent

protected AbstractHttpContent(java.lang.String mediaType)

Parameters:

mediaType - Media type string (for example "type/subtype") this content represents or null to leave out. Can also contain parameters like "charset=utf-8"

Since:

1.10

AbstractHttpContent

protected AbstractHttpContent(HttpMediaType mediaType)

Parameters:

mediaType - Media type this content represents or null to leave out

Since:

1.10

Method Detail

getLength

public long getLength()
               throws java.io.IOException

Default implementation calls computeLength() once and caches it for future invocations, but subclasses may override.

Specified by:

getLength in interface HttpContent

Throws:

java.io.IOException

getMediaType

public final HttpMediaType getMediaType()

Returns the media type to use for the Content-Type header, or null if unspecified.

Since:

1.10

setMediaType

public AbstractHttpContent setMediaType(HttpMediaType mediaType)

Sets the media type to use for the Content-Type header, or null if unspecified.

This will also overwrite any previously set parameter of the media type (for example "charset"), and therefore might change other properties as well.

Since:

1.10

getCharset

protected final java.nio.charset.Charset getCharset()

Returns the charset specified in the media type or ISO_8859_1 if not specified.

Since:

1.10

getType

public java.lang.String getType()

Description copied from interface: HttpContent

Returns the content type or null for none.

Specified by:

getType in interface HttpContent

computeLength

protected long computeLength()
                      throws java.io.IOException

Computes and returns the content length or less than zero if not known.

Subclasses may override, but by default this computes the length by calling computeLength(HttpContent).

Throws:

java.io.IOException

retrySupported

public boolean retrySupported()

Default implementation returns true, but subclasses may override.

Specified by:

retrySupported in interface HttpContent

computeLength

public static long computeLength(HttpContent content)
                          throws java.io.IOException

Returns the computed content length based using IOUtils.computeLength(StreamingContent) or instead -1 if HttpContent.retrySupported() is false because the stream must not be read twice.

Parameters:

content - HTTP content

Returns:

computed content length or -1 if retry is not supported

Throws:

java.io.IOException

Since:

1.14