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java.lang.Objectcom.crystaldecisions.report.web.ServerControl
public abstract class ServerControl
This is an abstract class. Use the derived classes
such as CrystalReportViewer
and
ReportServerControl
.
Constructor Summary | |
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ServerControl()
|
Method Summary | |
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int |
getHeight()
Returns the viewer height. |
java.lang.String |
getHtmlContent(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response,
javax.servlet.ServletContext context)
This method handles the user's request to generate the HTML for the report and returns the HTML as a String . |
int |
getLeft()
Returns the value for the position of the left side of the viewer. |
java.lang.String |
getName()
Returns the name of the viewer control. |
java.util.Locale |
getProductLocale()
Gets the locale setting used to display all text and formatting generated by the viewer (such as the toolbar). |
int |
getTop()
Returns the value for the position of the top of the viewer. |
java.lang.String |
getURI()
Returns the Universal Resource Identifier for the web page containing the viewer. |
java.lang.String |
getViewState()
Deprecated. As of Version 12. No replacement. Always returns an empty String . |
int |
getWidth()
Returns the viewer width. |
boolean |
isIgnoreViewStateOnLoad()
Deprecated. As of Version 11. No replacement. Always returns false . |
boolean |
isOwnForm()
Deprecated. As of Version 12. No replacement. Always returns true . |
boolean |
isOwnPage()
Sets whether the viewer control owns the page. |
void |
processHttpRequest(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response,
javax.servlet.ServletContext context,
java.io.Writer out)
Handles the user's request to generate the HTML for the report and writes the HTML directly to the response object. |
void |
setHeight(int newM_Height)
Sets the viewer height. |
void |
setIgnoreViewStateOnLoad(boolean newIgnoreViewStateOnLoad)
Deprecated. as of Version 11. No replacement. Calling this method has no effect. |
void |
setLeft(int newM_Left)
Sets the position for the left side of the viewer. |
void |
setName(java.lang.String newName)
Sets the name for the viewer control. |
void |
setOwnForm(boolean newOwnForm)
Deprecated. As of Version 12. No replacement. Calling this method has no effect. |
void |
setOwnPage(boolean newOwnPage)
Sets whether the viewer control owns the page. |
void |
setProductLocale(java.util.Locale locale)
Sets the locale setting used to display all text and formatting generated by the viewer (such as the toolbar). |
void |
setTop(int newM_Top)
Sets the value for the position of the top of the viewer. |
void |
setURI(java.lang.String newURI)
Sets the Universal Resource Identifier for the report. |
void |
setViewState(java.lang.String viewState)
Deprecated. As of Version 12. No replacement. Calling this method has no effect. |
void |
setWidth(int newM_Width)
Sets the width of the viewer. |
Methods inherited from class java.lang.Object |
---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ServerControl()
Method Detail |
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public int getHeight()
Returns the viewer height.
int
.
The unit is browser-dependent.setHeight
public final java.lang.String getHtmlContent(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.ServletContext context) throws ReportSDKExceptionBase
This method handles the user's request to generate the HTML
for the report and returns the HTML as a String
.
Note: Either the getHtmlContent
method
or the processHttpRequest
method can be used to handle the user's request to generate the HTML
for the report, depending on how you write your JSP.
If the viewer's content is displayed more than once,
then the getHtmlContent
method is more efficient,
because the request is processed once and the resulting HTML string
can be used multiple times. In this case, you must set the content type
of the HTML, as recommended in the table. Additionally, using getHtmlContent
sets setOwnPage
to false.
Viewing format | Recommended HTML content type |
Standard web reporting | "text/html; charset=UTF-8" |
Mobile | "text/html" or "text/vnd.wap.wml" |
PDA | "text/html; charset=UTF-8" |
Note: Mobile and PDA content types are not supported by the Java Reporting Component. (Java Reporting Component not shipped in Business Objects XI release 3.0)
request
- A HttpServletRequest
object
containing the values passed to the server during an Http request.response
- A HttpServletResponse
object
that receives the HTML output and sends it to the client.context
- A ServletContext
object
that specifies the servlet context.
String
.
ReportSDKExceptionBase
public int getLeft()
Returns the value for the position of the left side of the viewer.
int
. The unit is browser-dependent.setLeft
public java.lang.String getName()
Returns the name of the viewer control. By default the viewer control is named CrystalViewer.
String
.setName
public int getTop()
Returns the value for the position of the top of the viewer.
int
for. The unit is browser-dependent.setTop
public java.lang.String getURI()
Returns the Universal Resource Identifier for the web page containing the viewer.
String
.setURI
public java.lang.String getViewState()
String
.
Returns the view state. This is an encoded String
that
represents the current state of the report. The ViewState
is
used in order to perform client-side caching of information about the
current state of the report. By default, the viewer will manage the
ViewState
unless isOwnForm
is set to
false
.
Note: As of Version 12, the viewer maintains its own state.
The ownForm
restrictions have been removed from the viewer.
String
that represents the current state of the report.setOwnForm
,
isOwnForm
,
setViewState
public int getWidth()
Returns the viewer width.
int
. The unit is
browser-dependent.setWidth
public boolean isIgnoreViewStateOnLoad()
false
.
Returns whether the view state is ignored when loading
the viewer. You would want this to be set to true
if the viewer is loaded in order to display a different page of the report.
Note: As of Version 12, the viewer maintains its own state. The ownForm restrictions have been removed from the viewer.
true
if the view state is ignored and
false
otherwise.setIgnoreViewStateOnLoad
public boolean isOwnForm()
true
.
Returns whether or not the viewer control owns the form. If the server
control owns the form it is able to get and set values for the form.
In particular, by owning the form, the viewer control creates the
ViewState
object that is used in order to perform
client-side caching of information about the current state of the report.
If this is set to false
, it is the host's responsibility
to use getViewState
and store the returned view state in
a location that will be accessible in the subsequent request. The host
must then use setViewState
before calling
processHttpRequest
to restore the state of the viewer object.
Note: As of Version 12, the viewer maintains its own state. The ownForm restrictions have been removed from the viewer.
true
if the server control owns the form
and false
otherwise. By default, this value is true
.setViewState
,
getViewState
,
setOwnForm
public boolean isOwnPage()
Sets whether the viewer control owns the page. Setting isOwnPage to true provides several benefits, by allowing the viewer to completely handle the surrounding HTML content. Allowing the viewer to handle the surrounding HTML content reduces the amount of code you need to add to your JSP page and allows the viewer to automatically determine certain settings:
Set this attribute to false if the page is within a portal or if there is any other content on the page.
Note: If isOwnPage is false, the surrounding <HTML> tags and content-type and charset directives need to be manually set. Additionally, when isOwnPage is false, the printing and exporting features are disabled.
true
if the viewer owns the page and
false
otherwise.setOwnPage
public final void processHttpRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.ServletContext context, java.io.Writer out) throws ReportSDKExceptionBase
Handles the user's request to generate the HTML for the report and writes the HTML directly to the response object.
Note: Either the getHtmlContent
method or the processHttpRequest
method can be used to handle the user's request to generate the HTML
for the report, depending on how you write your JSP.
If the viewer's content is to be displayed more than once,
then the getHtmlContent
method is more efficient,
because the request is processed once and the resulting HTML string
can be used multiple times. However, using getHtmlContent
sets setOwnPage
to false and disables exporting and printing.
Note: If you provide your own writer then you must set the
charset
and the content-type
. For improved
performance, you may wish to wrap your writer in a java.io.BufferedWriter
.
response
- A HttpServletResponse
object that receives
the HTML output and sends it to the client.context
- A ServletContext
object
that specifies the servlet context.request
- The HttpServletRequest
object containing
the values passed to the server during an Http request.out
- A Writer object. This value is set to null unless you are
providing your own writer.
ReportSDKExceptionBase
public void setHeight(int newM_Height)
Sets the viewer height.
Note: Together, the setHeight
and
setWidth
methods control the viewable size of
the viewer. The default value is 0 (zero). If these methods
are set to zero, the viewable size of the viewer is calculated
based on the report the user is viewing.
If the setBestFitPage
method is set to true, the values of the setHeight
and
setWidth
methods are ignored.
newM_Height
- An int
that specifies the height of
the viewer. The unit is browser-dependent.getHeight
public void setIgnoreViewStateOnLoad(boolean newIgnoreViewStateOnLoad)
Sets whether to ignore the view state when loading the viewer.
You would want this to be set to true
if the viewer is loaded in order to display a different page of the report.
Note: If this property is set to true
, the viewer will behave as though the report
is being viewed at its initial state. For example, pressing next page will always navigate to
page 2, if the initial view of the report began on page 1.
newIgnoreViewStateOnLoad
- true
to make the viewer
ignore the ViewState
when loading.isIgnoreViewStateOnLoad
public void setLeft(int newM_Left)
Sets the position for the left side of the viewer.
newM_Left
- An int
that specifies
the position for the left side of the viewer.
The unit is browser-dependent.getLeft
public void setName(java.lang.String newName)
Sets the name for the viewer control. By default the viewer control is named CrystalViewer.
Note: The Crystal Report Server Control supports multiple versions of the viewer co-existing in the same web page, as long as each viewer has a unique name. If the Name property is set to a non-empty value, it is used as the ObjectID in the query string. The ObjectID identifies the viewer that will handle a request.
Due to the internal uses of this property, any special characters (including punctuation, spacing, and Unicode characters) are stripped from the value when it is set. When using multiple viewers on the same page, you must ensure that the viewer names will still be unique even after these changes are made.
The CrystalReportExportControl does not support multiple controls on the same page.
newName
- The String
that specifies the name of the
viewer control.getName
public void setOwnForm(boolean newOwnForm)
Sets whether the viewer control owns the form. If the server control owns the form it is able to get and set values for the form. In particular, by owning the form, the viewer control is able to cache its state to the client side.
If this is set to false
, it is the host's responsibility
to use getViewState
and store the returned view state in a
location that will be accessible in the subsequent request. The host must
then use setViewState
before calling
processHttpRequest
to restore the state of the viewer object.
Note: As of Version 12, the viewer maintains its own state. The ownForm restrictions have been removed from the viewer.
newOwnForm
- true
to set the server control to own the form and
false
otherwise. By default, this value is true
.setViewState
,
getViewState
,
isOwnForm
public void setOwnPage(boolean newOwnPage)
Sets whether the viewer control owns the page. Setting setOwnPage
to true provides several benefits, by allowing the viewer to completely
handle the surrounding HTML content. Allowing the viewer to handle the
surrounding HTML content reduces the amount of code you need to add to your
JSP page and allows the viewer to automatically determine certain settings:
- It allows the viewer to choose which page start and end tags to use based on
what device is being used to view the page. For example, it writes out the
HTML start tag for web browsers and WML start tag for mobile devices.
- It correctly sets the content-type and charset information for the page.
This ensures that pages containing international characters is displayed correctly.
Set this attribute to false if the page is within a portal or if there is any other content on the page. If you have multiple viewers on a single page, you must set this property to false and manually configure the code page, content type and character set.
Note: If setOwnPage is false, the surrounding HTML tags and content-type and charset directives need to be manually set.
newOwnPage
- true
to make the
viewer object own the page. The default value is true.
isOwnPage
public void setTop(int newM_Top)
Sets the value for the position of the top of the viewer.
newM_Top
- An int
value for the position of the
top of the viewer. The unit is browser-dependent.getTop
public void setURI(java.lang.String newURI)
Sets the Universal Resource Identifier for the report.
Note: For a standard HTML browser, you can have the viewer post a query string (such as, http://www.myweburl.com/myviewerpage.asp?myvar=myvalue) to the web server by setting the URI property. This method may not work for some wireless devices.
Note: Passing an absolute URI requires special care in case of deployments
involving reverse proxies or load-balancers.
If the argument is an absolute URI starting with the URI scheme (http, or https),
the URI must be visible to the web clients, that is, it shouldn't point to an internal
web server hidden behind the proxy.
If the argument is an absolute URI starting with /, the URI must mimic the folder structure
of the deployed application, starting from root.
newURI
- A String
that specifies the Universal Resource
Identifier for the report.getURI
public void setViewState(java.lang.String viewState)
The ViewState
is an encoded String
that represents the current state of the report.
The ViewState
is used in order to perform client-side caching of information about the
current state of the report. By default, the viewer will manage the ViewState
unless
isOwnForm
is set to false
.
Note: Since the internal format of the view state string is subject to change, it is recommended that you do not parse the view state string.
Note: As of Version 12, the viewer maintains its own state. The ownForm restrictions have been removed from the viewer.
viewState
- An encoded String
that represents the current state of the report.getViewState
,
setOwnForm
,
isOwnForm
public void setWidth(int newM_Width)
Sets the width of the viewer.
Note: Together, the setHeight
and
setWidth
methods control the viewable size of
the viewer. The default value is 0 (zero). If these methods
are set to zero, the viewable size of the viewer is calculated
based on the report the user is viewing.
If the
setBestFitPage
method is set to true, the values of the setHeight
and
setWidth
methods are ignored.
newM_Width
- An int
value for the width of the viewer.
The unit is browser-dependent.getWidth
public java.util.Locale getProductLocale()
Gets the locale setting used to display all text and formatting generated by the viewer (such as the toolbar). The productLocale setting does not apply to text associated with the report content (the browser locale is used to determine how to format report-related text). Additionally, the productLocale setting does not apply to the groupTree text.
java.util.Locale
object.public void setProductLocale(java.util.Locale locale)
Sets the locale setting used to display all text and formatting generated by the viewer (such as the toolbar). The productLocale setting does not apply to text associated with the report content (the browser locale is used to determine how to format report-related text). Additionally, the productLocale setting does not apply to the groupTree text.
the
- locale as a java.util.Locale
object.
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