本文整理了Java中org.geotools.filter.Filters.asInt()方法的一些代码示例，展示了Filters.asInt()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Filters.asInt()方法的具体详情如下：
包路径：org.geotools.filter.Filters
类名称：Filters
方法名：asInt

Filters.asInt介绍

[英]Obtain the provided Expression as an integer.

This method is quickly used to safely check Literal expressions.
[中]以整数形式获取提供的表达式。
此方法可快速用于安全地检查文字表达式。

代码示例

代码示例来源：origin: geotools/geotools

/**
 * Retrieve the width of a Stroke object.
 *
 * @param stroke the Stroke object.
 * @return width or {@linkplain #NOTFOUND} if not available.
 */
public static int width(Stroke stroke) {
  if (stroke == null) {
    return NOTFOUND;
  }
  return Filters.asInt(stroke.getWidth());
}

代码示例来源：origin: geotools/geotools

/**
 * Retrieves the outline width from a PolygonSymbolizer
 *
 * <p>If you are using something fun like rules you will need to do your own thing.
 *
 * @param symbolizer Polygon symbolizer information.
 * @return outline width or {@linkplain #NOTFOUND} if unavailable.
 */
public static int polyWidth(PolygonSymbolizer symbolizer) {
  if (symbolizer == null) {
    return NOTFOUND;
  }
  Stroke stroke = symbolizer.getStroke();
  if (stroke != null) {
    return Filters.asInt(stroke.getWidth());
  }
  return NOTFOUND;
}

代码示例来源：origin: geotools/geotools

/**
 * Retrieves the size of the point's graphic, if found.
 *
 * <p>If you are using something fun like symbols you will need to do your own thing.
 *
 * @param symbolizer Point symbolizer information.
 * @return size of the graphic or {@linkplain #NOTFOUND}
 */
public static int pointSize(PointSymbolizer symbolizer) {
  if (symbolizer == null) {
    return NOTFOUND;
  }
  Graphic g = symbolizer.getGraphic();
  if (g == null) {
    return NOTFOUND;
  }
  Expression exp = g.getSize();
  return Filters.asInt(exp);
}

代码示例来源：origin: geotools/geotools

@Test
public void testAsInt() {
  assertEquals(1, filters.asInt(ff.literal(1)));
  assertEquals(1, filters.asInt(ff.literal("1")));
  assertEquals(Filters.NOTFOUND, filters.asInt(ff.property("fred")));
}

代码示例来源：origin: geotools/geotools

@Test
public void testAsDouble() {
  assertEquals(1.0, Filters.asInt(ff.literal(1)), DELTA);
  assertEquals(1, Filters.asInt(ff.literal("1")), DELTA);
}

代码示例来源：origin: geotools/geotools

Expression exp = stroke.getWidth();
if (exp != null) {
  int width = Filters.asInt(exp);
  if (width != NOTFOUND) {
    return width;

代码示例来源：origin: geotools/geotools

@Test
public void testPointWithGraphic() throws Exception {
  //    <UserStyle>
  //      <Title>GeoServer SLD Cook Book: Point as graphic</Title>
  //      <FeatureTypeStyle>
  //        <Rule>
  //          <PointSymbolizer>
  //            <Graphic>
  //              <ExternalGraphic>
  //                <OnlineResource
  //                  xlink:type="simple"
  //                  xlink:href="smileyface.png" />
  //                <Format>image/png</Format>
  //              </ExternalGraphic>
  //              <Size>32</Size>
  //            </Graphic>
  //          </PointSymbolizer>
  //        </Rule>
  //      </FeatureTypeStyle>
  //    </UserStyle>
  Style style = parse("point", "graphic.sld");
  Graphic graphic = SLD.graphic(SLD.pointSymbolizer(style));
  assertEquals(32, Filters.asInt(graphic.getSize()));
  ExternalGraphic external = (ExternalGraphic) graphic.graphicalSymbols().get(0);
  assertEquals("smileyface.png", external.getLocation().getPath());
  assertEquals("image/png", external.getFormat());
}

代码示例来源：origin: geotools/geotools

@Test
public void testRasterWithAlphaChannel() throws Exception {
  //    <UserStyle>
  //      <Title>SLD Cook Book: Alpha channel</Title>
  //      <FeatureTypeStyle>
  //        <Rule>
  //          <RasterSymbolizer>
  //            <ColorMap>
  //              <ColorMapEntry color="#008000" quantity="70" />
  //              <ColorMapEntry color="#008000" quantity="256" opacity="0"/>
  //            </ColorMap>
  //          </RasterSymbolizer>
  //        </Rule>
  //      </FeatureTypeStyle>
  //    </UserStyle>
  Style style = parse("raster", "alpha-channel.sld");
  RasterSymbolizer raster = SLD.rasterSymbolizer(style);
  ColorMapEntry e = raster.getColorMap().getColorMapEntry(0);
  assertEquals("#008000", Filters.asString(e.getColor()));
  assertEquals(70, Filters.asInt(e.getQuantity()));
  e = raster.getColorMap().getColorMapEntry(1);
  assertEquals("#008000", Filters.asString(e.getColor()));
  assertEquals(256, Filters.asInt(e.getQuantity()));
  assertEquals(0, Filters.asInt(e.getOpacity()));
}

代码示例来源：origin: geotools/geotools

assertEquals("file:colorblocks.png", external.getLocation().toString());
assertEquals("image/png", external.getFormat());
assertEquals(93, Filters.asInt(g.getSize()));

代码示例来源：origin: geotools/geotools

@Test
public void testRasterWithDiscreteColors() throws Exception {
  //    <UserStyle>
  //      <Title>SLD Cook Book: Discrete colors</Title>
  //      <FeatureTypeStyle>
  //        <Rule>
  //          <RasterSymbolizer>
  //            <ColorMap type="intervals">
  //              <ColorMapEntry color="#008000" quantity="150" />
  //              <ColorMapEntry color="#663333" quantity="256" />
  //            </ColorMap>
  //          </RasterSymbolizer>
  //        </Rule>
  //      </FeatureTypeStyle>
  //    </UserStyle>
  Style style = parse("raster", "discrete-colors.sld");
  RasterSymbolizer raster = SLD.rasterSymbolizer(style);
  ColorMapEntry e = raster.getColorMap().getColorMapEntry(0);
  assertEquals("#008000", Filters.asString(e.getColor()));
  assertEquals(150, Filters.asInt(e.getQuantity()));
  e = raster.getColorMap().getColorMapEntry(1);
  assertEquals("#663333", Filters.asString(e.getColor()));
  assertEquals(256, Filters.asInt(e.getQuantity()));
}

代码示例来源：origin: geotools/geotools

@Test
public void testRasterWithThreeColorGradient() throws Exception {
  //    <UserStyle>
  //      <Title>SLD Cook Book: Three color gradient</Title>
  //      <FeatureTypeStyle>
  //        <Rule>
  //          <RasterSymbolizer>
  //            <ColorMap>
  //              <ColorMapEntry color="#0000FF" quantity="150" />
  //              <ColorMapEntry color="#FFFF00" quantity="200" />
  //              <ColorMapEntry color="#FF0000" quantity="250" />
  //            </ColorMap>
  //          </RasterSymbolizer>
  //        </Rule>
  //      </FeatureTypeStyle>
  //    </UserStyle>
  Style style = parse("raster", "three-color-gradient.sld");
  RasterSymbolizer raster = SLD.rasterSymbolizer(style);
  ColorMapEntry e = raster.getColorMap().getColorMapEntry(0);
  assertEquals("#0000FF", Filters.asString(e.getColor()));
  assertEquals(150, Filters.asInt(e.getQuantity()));
  e = raster.getColorMap().getColorMapEntry(1);
  assertEquals("#FFFF00", Filters.asString(e.getColor()));
  assertEquals(200, Filters.asInt(e.getQuantity()));
  e = raster.getColorMap().getColorMapEntry(2);
  assertEquals("#FF0000", Filters.asString(e.getColor()));
  assertEquals(250, Filters.asInt(e.getQuantity()));
}

代码示例来源：origin: geotools/geotools

@Test
public void testRasterWithTwoColorGradient() throws Exception {
  //    <UserStyle>
  //      <Title>SLD Cook Book: Two color gradient</Title>
  //      <FeatureTypeStyle>
  //        <Rule>
  //          <RasterSymbolizer>
  //            <ColorMap>
  //              <ColorMapEntry color="#008000" quantity="70" />
  //              <ColorMapEntry color="#663333" quantity="256" />
  //            </ColorMap>
  //          </RasterSymbolizer>
  //        </Rule>
  //      </FeatureTypeStyle>
  //    </UserStyle>
  Style style = parse("raster", "two-color-gradient.sld");
  RasterSymbolizer raster = SLD.rasterSymbolizer(style);
  ColorMapEntry e = raster.getColorMap().getColorMapEntry(0);
  assertEquals("#008000", Filters.asString(e.getColor()));
  assertEquals(70, Filters.asInt(e.getQuantity()));
  e = raster.getColorMap().getColorMapEntry(1);
  assertEquals("#663333", Filters.asString(e.getColor()));
  assertEquals(256, Filters.asInt(e.getQuantity()));
}

代码示例来源：origin: geotools/geotools

assertEquals(95, Filters.asInt(e.getQuantity()));
assertEquals(110, Filters.asInt(e.getQuantity()));
assertEquals(135, Filters.asInt(e.getQuantity()));
assertEquals(160, Filters.asInt(e.getQuantity()));
assertEquals(185, Filters.asInt(e.getQuantity()));
assertEquals(210, Filters.asInt(e.getQuantity()));
assertEquals(235, Filters.asInt(e.getQuantity()));
assertEquals(256, Filters.asInt(e.getQuantity()));

代码示例来源：origin: geotools/geotools

@Test
public void testRasterWithTransparentGradient() throws Exception {
  //    <UserStyle>
  //      <Title>SLD Cook Book: Transparent gradient</Title>
  //      <FeatureTypeStyle>
  //        <Rule>
  //          <RasterSymbolizer>
  //            <Opacity>0.3</Opacity>
  //            <ColorMap>
  //              <ColorMapEntry color="#008000" quantity="70" />
  //              <ColorMapEntry color="#663333" quantity="256" />
  //            </ColorMap>
  //          </RasterSymbolizer>
  //        </Rule>
  //      </FeatureTypeStyle>
  //    </UserStyle>
  Style style = parse("raster", "transparent-gradient.sld");
  RasterSymbolizer raster = SLD.rasterSymbolizer(style);
  assertEquals(0.3, Filters.asDouble(raster.getOpacity()), 0.1);
  ColorMapEntry e = raster.getColorMap().getColorMapEntry(0);
  assertEquals("#008000", Filters.asString(e.getColor()));
  assertEquals(70, Filters.asInt(e.getQuantity()));
  e = raster.getColorMap().getColorMapEntry(1);
  assertEquals("#663333", Filters.asString(e.getColor()));
  assertEquals(256, Filters.asInt(e.getQuantity()));
}

代码示例来源：origin: geotools/geotools

assertEquals(32, Filters.asInt(legend.getSize()));

代码示例来源：origin: geotools/geotools

assertEquals(10, Filters.asInt(font.getSize()));
assertEquals("normal", Filters.asString(font.getStyle()));
assertEquals("bold", Filters.asString(font.getWeight()));

代码示例来源：origin: geotools/geotools

assertEquals(70, Filters.asInt(e.getQuantity()));
assertEquals(256, Filters.asInt(e.getQuantity()));

代码示例来源：origin: geotools/geotools

assertEquals(1, SLD.width(mark.getStroke()));
assertEquals(12, Filters.asInt(g.getSize()));

代码示例来源：origin: geotools/geotools

@Test
public void testPointWithRotation() throws Exception {
  // <UserStyle>
  //   <Title>GeoServer SLD Cook Book: Rotated square</Title>
  //   <FeatureTypeStyle>
  //     <Rule>
  //       <PointSymbolizer>
  //         <Graphic>
  //           <Mark>
  //             <WellKnownName>square</WellKnownName>
  //             <Fill>
  //               <CssParameter name="fill">#009900</CssParameter>
  //             </Fill>
  //           </Mark>
  //           <Size>12</Size>
  //           <Rotation>45</Rotation>
  //         </Graphic>
  //       </PointSymbolizer>
  //     </Rule>
  //   </FeatureTypeStyle>
  // </UserStyle>
  Style style = parse("point", "rotated-square.sld");
  PointSymbolizer point = SLD.pointSymbolizer(style);
  assertEquals("square", SLD.wellKnownName(SLD.mark(point)));
  assertEquals(color("009900"), SLD.color(SLD.fill(point)));
  assertEquals(12, SLD.pointSize(point));
  assertEquals(45, Filters.asInt(SLD.graphic(point).getRotation()));
}

代码示例来源：origin: geotools/geotools

assertEquals(1, SLD.width(mark.getStroke()));
assertEquals(16, Filters.asInt(poly.getFill().getGraphicFill().getSize()));