📄 在jsf中实现分页（二）.htm
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style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff">/** */</SPAN><SPAN
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style="COLOR: #008000">/**</SPAN><SPAN
style="COLOR: #008000"><BR><IMG src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * A special type of JSF DataModel to allow a datatable and datascroller to page<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * through a large set of data without having to hold the entire set of data in<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * memory at once.<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * <p><BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * Any time a managed bean wants to avoid holding an entire dataset, the managed<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * bean should declare an inner class which extends this class and implements<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * the fetchData method. This method is called as needed when the table requires<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * data that isn't available in the current data page held by this object.<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * <p><BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * This does require the managed bean (and in general the business method that<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * the managed bean uses) to provide the data wrapped in a DataPage object that<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * provides info on the full size of the dataset.<BR><IMG
src="在JSF中实现分页（二）.files/ExpandedBlockEnd.gif"
align=top> </SPAN><SPAN
style="COLOR: #008000">*/</SPAN></SPAN><SPAN
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align=top></SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN
style="COLOR: #000000"> </SPAN><SPAN
style="COLOR: #0000ff">abstract</SPAN><SPAN
style="COLOR: #000000"> </SPAN><SPAN
style="COLOR: #0000ff">class</SPAN><SPAN
style="COLOR: #000000"> PagedListDataModel </SPAN><SPAN
style="COLOR: #0000ff">extends</SPAN><SPAN
style="COLOR: #000000"> DataModel<BR><IMG
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style="COLOR: #000000">{<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff">int</SPAN><SPAN
style="COLOR: #000000"> pageSize;<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff">int</SPAN><SPAN
style="COLOR: #000000"> rowIndex;<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> DataPage page;<BR><IMG
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align=top> </SPAN><SPAN
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style="COLOR: #008000">/**</SPAN><SPAN
style="COLOR: #008000"><BR><IMG src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * Create a datamodel that pages through the data showing the specified<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * number of rows on each page.<BR><IMG
src="在JSF中实现分页（二）.files/ExpandedSubBlockEnd.gif"
align=top> </SPAN><SPAN
style="COLOR: #008000">*/</SPAN></SPAN><SPAN
style="COLOR: #000000"><BR><IMG src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff">public</SPAN><SPAN
style="COLOR: #000000"> PagedListDataModel(</SPAN><SPAN
style="COLOR: #0000ff">int</SPAN><SPAN
style="COLOR: #000000"> pageSize)<BR><IMG
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src="在JSF中实现分页（二）.files/dot.gif"></SPAN><SPAN
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style="COLOR: #000000">{<BR><IMG
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align=top> </SPAN><SPAN
style="COLOR: #0000ff">super</SPAN><SPAN
style="COLOR: #000000">();<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff">this</SPAN><SPAN
style="COLOR: #000000">.pageSize </SPAN><SPAN
style="COLOR: #000000">=</SPAN><SPAN
style="COLOR: #000000"> pageSize;<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff">this</SPAN><SPAN
style="COLOR: #000000">.rowIndex </SPAN><SPAN
style="COLOR: #000000">=</SPAN><SPAN
style="COLOR: #000000"> </SPAN><SPAN
style="COLOR: #000000">-</SPAN><SPAN
style="COLOR: #000000">1</SPAN><SPAN
style="COLOR: #000000">;<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff">this</SPAN><SPAN
style="COLOR: #000000">.page </SPAN><SPAN
style="COLOR: #000000">=</SPAN><SPAN
style="COLOR: #000000"> </SPAN><SPAN
style="COLOR: #0000ff">null</SPAN><SPAN
style="COLOR: #000000">;<BR><IMG
src="在JSF中实现分页（二）.files/ExpandedSubBlockEnd.gif"
align=top> }</SPAN></SPAN><SPAN
style="COLOR: #000000"><BR><IMG src="在JSF中实现分页（二）.files/InBlock.gif"
align=top><BR><IMG id=Codehighlighter1_1080_1218_Open_Image
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align=top> </SPAN><SPAN
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style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff">/** */</SPAN><SPAN
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style="COLOR: #008000">/**</SPAN><SPAN
style="COLOR: #008000"><BR><IMG src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * Not used in this class; data is fetched via a callback to the fetchData<BR><IMG
src="在JSF中实现分页（二）.files/InBlock.gif"
align=top> * method rather than by explicitly assigning a list.<BR><IMG
src="在JSF中实现分页（二）.files/ExpandedSubBlockEnd.gif"
align=top> </SPAN><SPAN
style="COLOR: #008000">*/</SPAN></SPAN><SPAN
style="COLOR: #000000"><BR><IMG src="在JSF中实现分页（二）.files/InBlock.gif"
align=top><BR><IMG src="在JSF中实现分页（二）.files/InBlock.gif"
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