com.github.dandelion.datatables.core.export
Class ExportUtils

java.lang.Object
  com.github.dandelion.datatables.core.export.ExportUtils

public final class ExportUtils
extends Object

Utilities used when exporting data.

Since:

0.9.0

Author:

Thibault Duchateau

Field Summary

static String	DDL_DT_REQUESTATTR_EXPORT_CONF Request attributes
static String	DDL_DT_REQUESTATTR_EXPORT_CONTENT
static String	DDL_DT_REQUESTPARAM_EXPORT_AUTOSIZE
static String	DDL_DT_REQUESTPARAM_EXPORT_EXTENSION
static String	DDL_DT_REQUESTPARAM_EXPORT_FORMAT
static String	DDL_DT_REQUESTPARAM_EXPORT_HEADER
static String	DDL_DT_REQUESTPARAM_EXPORT_ID
static String	DDL_DT_REQUESTPARAM_EXPORT_IN_PROGRESS Request parameters
static String	DDL_DT_REQUESTPARAM_EXPORT_MIME_TYPE
static String	DDL_DT_REQUESTPARAM_EXPORT_NAME
static String	DDL_DT_REQUESTPARAM_EXPORT_ORIENTATION
static String	DDL_DT_REQUESTPARAM_EXPORT_TYPE

Method Summary

static String	getCurrentExportType(javax.servlet.http.HttpServletRequest request)
static Boolean	isTableBeingExported(javax.servlet.ServletRequest servletRequest, HtmlTable table) Check whether the table if being exported using the request ExportConstants#DDL_DT_REQUESTPARAM_EXPORT_ID attribute.
static void	renderExport(HtmlTable table, ExportConf exportConf, javax.servlet.http.HttpServletResponse response) Renders the passed table by writing the data to the response.
static void	writeToResponse(javax.servlet.http.HttpServletResponse response, ByteArrayOutputStream baos, String title, String contentType) Write the given temporary OutputStream to the HTTP response as an Attachment with the given title.

Methods inherited from class java.lang.Object

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

Field Detail

DDL_DT_REQUESTATTR_EXPORT_CONF

public static final String DDL_DT_REQUESTATTR_EXPORT_CONF

Request attributes

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Constant Field Values

DDL_DT_REQUESTATTR_EXPORT_CONTENT

public static final String DDL_DT_REQUESTATTR_EXPORT_CONTENT

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_IN_PROGRESS

public static final String DDL_DT_REQUESTPARAM_EXPORT_IN_PROGRESS

Request parameters

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_TYPE

public static final String DDL_DT_REQUESTPARAM_EXPORT_TYPE

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_ID

public static final String DDL_DT_REQUESTPARAM_EXPORT_ID

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_FORMAT

public static final String DDL_DT_REQUESTPARAM_EXPORT_FORMAT

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_ORIENTATION

public static final String DDL_DT_REQUESTPARAM_EXPORT_ORIENTATION

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_HEADER

public static final String DDL_DT_REQUESTPARAM_EXPORT_HEADER

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_MIME_TYPE

public static final String DDL_DT_REQUESTPARAM_EXPORT_MIME_TYPE

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_EXTENSION

public static final String DDL_DT_REQUESTPARAM_EXPORT_EXTENSION

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_NAME

public static final String DDL_DT_REQUESTPARAM_EXPORT_NAME

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Constant Field Values

DDL_DT_REQUESTPARAM_EXPORT_AUTOSIZE

public static final String DDL_DT_REQUESTPARAM_EXPORT_AUTOSIZE

See Also:

Constant Field Values

Method Detail

renderExport

public static void renderExport(HtmlTable table,
                                ExportConf exportConf,
                                javax.servlet.http.HttpServletResponse response)

Renders the passed table by writing the data to the response.

Parameters:

table - The table to export.

exportConf - The export configuration (e.g. the export class to use).

response - The response to update.

writeToResponse

public static void writeToResponse(javax.servlet.http.HttpServletResponse response,
                                   ByteArrayOutputStream baos,
                                   String title,
                                   String contentType)
                            throws IOException

Write the given temporary OutputStream to the HTTP response as an Attachment with the given title.

Parameters:

response - current HTTP response

baos - the temporary OutputStream to write

title - the title of the attachment

contentType - the MIME type

Throws:

IOException - if writing/flushing failed

getCurrentExportType

public static String getCurrentExportType(javax.servlet.http.HttpServletRequest request)

isTableBeingExported

public static Boolean isTableBeingExported(javax.servlet.ServletRequest servletRequest,
                                           HtmlTable table)

Check whether the table if being exported using the request ExportConstants#DDL_DT_REQUESTPARAM_EXPORT_ID attribute.

The table's id must be tested in case of multiple tables are displayed on the same page and exportable.

Returns:

true if the table is being exported, false otherwise.