mapxtreme_mapxtreme最新版_arcgis engine(5)

DoublePointdblPt=newDoublePoint(-73.889444,42.765555);

doubledRadius=10.03;

try

{

fs=myLayer.searchWithinRadius(columnNames,dblPt,dRadius,LinearUnit.mile,qp);

}

catch(exceptione)

{

e.printStackTrace();

}

==>searchWithinRegion

示例：

privatebooleanlayerSearchWithinRegion()

{

//AssumefsisaFeatureSetobject.AssumecolumnNamesisavectorofthecolumns//tobereturned.AssumeqpistheQueryParamsobject.AssumemyLayerisaLayer//object.AssumevGeomisaVectorGeometryofTYPE_REGION

try

{

fs=myLayer.searchWithinRegion(columnNames,vGeom,qp);

}

catch(Exceptione)

{

e.printStackTrace();

returnfalse;

}

returntrue;

}

==>searchWithinRectangle

示例：

//AssumefsisaFeatureSetobject.AssumecolumnNamesisavectorofthecolumns//tobereturned.AssumeqpistheQueryParamsobject.AssumemyLayerisaLayer//object.

DoubleRectdRect=newDoubleRect(-74.092662,42.765555,-73.668898,42.856420);

try

{

fs=myLayer.searchWithinRectangle(columnNames,dRect,qp);

}

catch(exceptione)

{

e.printStackTrace();

}

==>searchAtPoint

示例：

//AssumefsisaFeatureSetobject.AssumecolumnNamesisavectorofthecolumns//tobereturned.AssumeqpistheQueryParamsobject.AssumemyLayerisaLayer//object.

DoublePointdp=newDoublePoint(12.3456,-67.890);

try

{

fs=myLayer.searchAtPoint(columnNames,dp,qp);

}

catch(exceptione)

{

e.printStackTrace();

}

==>searchByAttribute

示例：

//AssumefsisaFeatureSetobject.AssumecolumnNamesisavectorofthecolumnsto//bereturned.AssumeqpistheQueryParamsobject.AssumemyLayerisaLayer//object.Assumeattristheattributetosearchagainst.AssumecolNameisthecolumnto//searchagainst.

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