Package gov.usgs.earthquake.product

Class AbstractContent

java.lang.Object

gov.usgs.earthquake.product.AbstractContent

All Implemented Interfaces:

Content

Direct Known Subclasses:

ByteContent, FileContent, InputStreamContent, URLContent

public abstract class AbstractContent
extends Object
implements Content

AbstractContent is a base class for other content classes and implements common functionality.

Constructor Summary

Constructors

Constructor	Description
AbstractContent()	Default Constructor which requires no arguments.
AbstractContent(Content content)	Copy constructor from another content.
AbstractContent(String contentType, Date lastModified, Long length)	Null values are replaced with defaults.

Method Summary

Modifier and Type	Method	Description
String	getContentType()	The type of content.
Date	getLastModified()	When the content was modified.
Long	getLength()	How much content there is.
String	getSha256()	Get the Sha256 hash.
String	getSha256(boolean computeIfMissing)	Get or generate the MD5 hash of content.
void	setContentType(String contentType)	Set the content mime type.
void	setLastModified(Date lastModified)	Set when this content was created.
void	setLength(Long length)	Set the content length.
void	setSha256(String sha256)	Set the sha256 hash of content.

Methods inherited from class java.lang.Object

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

Methods inherited from interface gov.usgs.earthquake.product.Content

close, getInputStream

Constructor Details

AbstractContent

public AbstractContent(String contentType,
 Date lastModified,
 Long length)

Null values are replaced with defaults.

Parameters:

contentType - defaults to "text/plain".

lastModified - defaults to new Date().

length - defaults to -1L.

AbstractContent

public AbstractContent(Content content)

Copy constructor from another content.

Parameters:

content - the content to copy.

AbstractContent

public AbstractContent()

Default Constructor which requires no arguments. Default values are used for all fields.

Method Details

getContentType

public String getContentType()

Description copied from interface: Content

The type of content.

Specified by:

getContentType in interface Content

Returns:

the content mime type.

setContentType

public void setContentType(String contentType)

Set the content mime type.

Parameters:

contentType - the content mime type.

getLastModified

public Date getLastModified()

Description copied from interface: Content

When the content was modified.

Specified by:

getLastModified in interface Content

Returns:

the content creation date.

setLastModified

public void setLastModified(Date lastModified)

Set when this content was created.

Parameters:

lastModified - when this content was created.

getLength

public Long getLength()

Description copied from interface: Content

How much content there is.

Specified by:

getLength in interface Content

Returns:

the content length, or -1 if unknown.

setLength

public void setLength(Long length)

Set the content length.

Parameters:

length - long to set

getSha256

public String getSha256()
                 throws Exception

Get the Sha256 hash.

Specified by:

getSha256 in interface Content

Returns:

base64 encoded sha256 of content bytes.

Throws:

Exception - if error occurs

getSha256

public String getSha256(boolean computeIfMissing)
                 throws Exception

Get or generate the MD5 hash of content.

Parameters:

computeIfMissing - Use getInputStream to generate hash if missing.

Returns:

sha256 string

Throws:

Exception - if error occurs

setSha256

public void setSha256(String sha256)

Set the sha256 hash of content.

Parameters:

sha256 - to set