本文整理了Java中org.geotools.util.Converters类的一些代码示例，展示了Converters类的具体用法。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。Converters类的具体详情如下：
包路径：org.geotools.util.Converters
类名称：Converters

Converters介绍

[英]Convenience class for converting an object from one type to an object of another.
[中]用于将对象从一种类型转换为另一种类型的对象的便利类。

代码示例

代码示例来源：origin: geoserver/geoserver

@Override
public <T> T evaluate(Object object, Class<T> context) {
  // Selection of the first expression
  Expression clazzExpression = parameters.get(0);
  // Getting the defined class
  Class clazz = clazzExpression.evaluate(object, Class.class);
  // Checking the result
  boolean result = false;
  // If the input class is Object, the function always returns true
  if (clazz != null) {
    if (clazz == Object.class) {
      result = true;
    } else {
      // Otherwise the function checks if the class is an instance of the
      // input class
      result = clazz.isAssignableFrom(object.getClass());
    }
  }
  // Finally the result is converted to the defined context class
  return Converters.convert(result, context);
}

代码示例来源：origin: geotools/geotools

/**
 * Uses {@link Converters} to parse the provided text into the correct values to create a
 * feature.
 *
 * @param type FeatureType
 * @param fid Feature ID for new feature
 * @param text Text representation of values
 * @return newly created feature
 * @throws IllegalAttributeException
 */
public static SimpleFeature parse(SimpleFeatureType type, String fid, String[] text)
    throws IllegalAttributeException {
  Object[] attributes = new Object[text.length];
  for (int i = 0; i < text.length; i++) {
    AttributeType attType = type.getDescriptor(i).getType();
    attributes[i] = Converters.convert(text[i], attType.getBinding());
  }
  return SimpleFeatureBuilder.build(type, attributes, fid);
}

代码示例来源：origin: geotools/geotools

@Test
public void testContrastDarkLigthReference() {
  Function function =
      FF.function(
          "contrast",
          FF.literal("#222222"),
          FF.literal("#101010"),
          FF.literal("#dddddd"));
  Color result = (Color) function.evaluate(null);
  assertEquals("#DDDDDD", Converters.convert(result, String.class));
}

代码示例来源：origin: geotools/geotools

private void doSetAttribute(AttributeDescriptor d, Object o) {
  if (d instanceof GeometryDescriptor) {
    MongoUtil.setDBOValue(
        featureDBO, mapper.getGeometryPath(), mapper.toObject((Geometry) o));
  } else {
    MongoUtil.setDBOValue(
        featureDBO,
        mapper.getPropertyPath(d.getLocalName()),
        Converters.convert(o, d.getType().getBinding()));
  }
}

代码示例来源：origin: geotools/geotools

throws IllegalArgumentException {
if (value == null) {
  if (descriptor.isNillable()) {
    return descriptor.getDefaultValue();
  Class target = descriptor.getType().getBinding();
  if (!target.isAssignableFrom(value.getClass())) {
    Object converted = Converters.convert(value, target);
    if (converted != null) {
      return converted;

代码示例来源：origin: geoserver/geoserver

public void modifyFeatures(AttributeDescriptor[] type, Object[] values, Filter filter)
    throws IOException {
  SimpleFeatureType original = typeMap.getOriginalFeatureType();
  // map back attribute types and values to the original values
  AttributeDescriptor[] originalTypes = new AttributeDescriptor[type.length];
  Object[] originalValues = new Object[values.length];
  for (int i = 0; i < values.length; i++) {
    originalTypes[i] = original.getDescriptor(type[i].getName());
    if (values[i] != null) {
      Class<?> target = originalTypes[i].getType().getBinding();
      originalValues[i] = Converters.convert(values[i], target);
      if (originalValues[i] == null)
        throw new IOException("Could not map back " + values[i] + " to type " + target);
    }
  }
  featureStore()
      .modifyFeatures(originalTypes, originalValues, store.retypeFilter(filter, typeMap));
}

代码示例来源：origin: geotools/geotools

double data0 = workingPoints.get(0).data.evaluate(object, Double.class);
double data1 = workingPoints.get(1).data.evaluate(object, Double.class);
workingPoints.add(
    0, new InterpPoint(ff2.literal(2 * data0 - data1), workingPoints.get(0).value));
segment++;
double data0 = workingPoints.get(segment).data.evaluate(object, Double.class);
double data1 = workingPoints.get(segment - 1).data.evaluate(object, Double.class);
workingPoints.add(
    new InterpPoint(
        ff2.literal(2 * data0 - data1), workingPoints.get(segment).value));
return Converters.convert(interpolated, context);

代码示例来源：origin: geoserver/geoserver

/**
 * returns the value asociated with <code>key</code> on the set of key/value pairs of this
 * request reader
 *
 * @param key DOCUMENT ME!
 * @return DOCUMENT ME!
 */
protected String getValue(String key) {
  return Converters.convert(kvpPairs.get(key), String.class);
}

代码示例来源：origin: geotools/geotools

Double value = lookupExp.evaluate(object, Double.class);
if (value == null) {
  value = Converters.convert(object, Double.class);
        convertedValues = new Object[values.length];
        for (int i = 0; i < convertedValues.length; i++) {
          convertedValues[i] = values[i].evaluate(object, context);
    return (T) convertedValues[valIdx];
  } else {
    return values[valIdx].evaluate(object, context);
    isIncludedInThreshold = ff.greater(lookupExp, threshholdExp);
  } else {
    isIncludedInThreshold = ff.greaterOrEqual(lookupExp, threshholdExp);

代码示例来源：origin: geotools/geotools

/**
   * Allows this Attribute to convert an argument to its prefered storage type. If no parsing is
   * possible, returns the original value. If a parse is attempted, yet fails (i.e. a poor decimal
   * format) throw the Exception. This is mostly for use internally in Features, but implementors
   * should simply follow the rules to be safe.
   *
   * @param value the object to attempt parsing of.
   * @return <code>value</code> converted to the preferred storage of this <code>AttributeType
   *     </code>. If no parsing was possible then the same object is returned.
   * @throws IllegalArgumentException if parsing is attempted and is unsuccessful.
   */
  protected Object parse(Object value) throws IllegalArgumentException {
    if (value != null) {
      Class target = getType().getBinding();
      if (!target.isAssignableFrom(value.getClass())) {
        // attempt to convert
        Object converted = Converters.convert(value, target);
        if (converted != null) {
          value = converted;
        }
      }
    }

    return value;
  }
}

代码示例来源：origin: geotools/geotools

public void testAfterInstant() throws Exception {
  Date date = convert("2002-12-03 10:00:00AM", Date.class);
  DefaultInstant instant = new DefaultInstant(new DefaultPosition(date));
  Expression literal = filterFac.literal(instant);
  Expression prop =
      filterFac.property(timestampFType.getAttributeDescriptors().get(0).getLocalName());
  PropertyIsEqualTo filter = filterFac.equals(prop, literal);
  encoder.setFeatureType(timestampFType);
  encoder.encode(filter);
  LOGGER.fine("testAttr is a Timestamp " + filter + " -> " + output.getBuffer().toString());
  assertEquals(output.getBuffer().toString(), "WHERE testAttr = '2002-12-03 10:00:00.0'");
}

代码示例来源：origin: geotools/geotools

@Override
public Object visit(PropertyIsBetween filter, Object extraData) {
  BasicDBObject output = asDBObject(extraData);
  String propName = convert(filter.getExpression().accept(this, null), String.class);
  Object lower = filter.getLowerBoundary().accept(this, getValueType(filter.getExpression()));
  Object upper = filter.getUpperBoundary().accept(this, getValueType(filter.getExpression()));
  BasicDBObject dbo = new BasicDBObject();
  dbo.put("$gte", lower);
  dbo.put("$lte", upper);
  output.put(propName, dbo);
  return output;
}

代码示例来源：origin: org.geoserver/gs-wms

@Override
public Object getDefaultValue(
    ResourceInfo resource, String dimensionName, DimensionInfo dimension, Class clz) {
  String attrName = dimension.getAttribute();
  Class<?> attrType = String.class;
  if (resource instanceof FeatureTypeInfo) {
    List<AttributeTypeInfo> attrTypes;
    try {
      attrTypes = ((FeatureTypeInfo) resource).attributes();
      for (AttributeTypeInfo attr : attrTypes) {
        if (attr.getName().equals(attrName)) {
          attrType = attr.getBinding();
          break;
        }
      }
    } catch (IOException e) {
    }
  }
  final FeatureCalc nearest =
      new NearestVisitor(ff.property(dimension.getAttribute()), this.toMatch);
  CalcResult res = getCalculatedResult((FeatureTypeInfo) resource, dimension, nearest);
  if (res.equals(CalcResult.NULL_RESULT)) {
    return null;
  } else {
    return Converters.convert(res.getValue(), clz);
  }
}

代码示例来源：origin: geotools/geotools

/**
   * Processed the {@link ConverterFactory} extension point.
   *
   * @return A collection of converter factories.
   * @since 2.4
   */
  static ConverterFactory[] factories() {
    if (factories == null) {
      Collection<ConverterFactory> factoryCollection =
          getConverterFactories(GeoTools.getDefaultHints());
      factories =
          (ConverterFactory[])
              factoryCollection.toArray(
                  new ConverterFactory[factoryCollection.size()]);
    }
    return factories;
  }
}

代码示例来源：origin: geotools/geotools

/**
 * Returns a set of all available {@link ConverterFactory}'s which can handle convert from the
 * source to destination class.
 *
 * <p>This method essentially returns all factories in which the following returns non null.
 *
 * <pre>
 * factory.createConverter( source, target );
 * </pre>
 *
 * @since 2.5
 */
public static Set<ConverterFactory> getConverterFactories(Class<?> source, Class<?> target) {
  HashSet<ConverterFactory> factories = new HashSet<ConverterFactory>();
  for (ConverterFactory factory : factories()) {
    if (factory.createConverter(source, target, null) != null) {
      factories.add(factory);
    }
  }
  return factories;
}

代码示例来源：origin: geotools/geotools

public void setAttribute(int index, Object value) throws IndexOutOfBoundsException {
  // first do conversion
  Object converted =
      Converters.convert(
          value, getFeatureType().getDescriptor(index).getType().getBinding());
  // if necessary, validation too
  if (validating) Types.validate(featureType.getDescriptor(index), converted);
  // finally set the value into the feature
  values[index] = converted;
}

代码示例来源：origin: geotools/geotools

@Test
public void testMix() {
  Function function =
      FF.function("mix", FF.literal("#ff0000"), FF.literal("#0000ff"), FF.literal("50%"));
  Color result = (Color) function.evaluate(null);
  assertEquals("#800080", Converters.convert(result, String.class));
}

代码示例来源：origin: geotools/geotools

public static SimpleFeature feature(SimpleFeatureType fType, String fid, Node node)
    throws Exception {
  SimpleFeatureBuilder b = new SimpleFeatureBuilder(fType);
  int attributeCount = fType.getAttributeCount();
  for (int i = 0; i < attributeCount; i++) {
    AttributeDescriptor att = fType.getDescriptor(i);
    AttributeType attType = att.getType();
    Object attValue = node.getChildValue(att.getLocalName());
    if ((attValue != null) && !attType.getBinding().isAssignableFrom(attValue.getClass())) {
      // type mismatch, to try convert
      Object converted = Converters.convert(attValue, attType.getBinding());
      if (converted != null) {
        attValue = converted;
      }
    }
    b.add(attValue);
  }
  // create the feature
  return b.buildFeature(fid);
}

代码示例来源：origin: geotools/geotools

if (attType.isNillable()) {
  return null; // it was an explicit "<null>"
try {
  Geometry geometry = wktReader.read(stringValue);
  value = Converters.convert(geometry, attType.getType().getBinding());
} catch (ParseException e) {
value = Converters.convert(stringValue, attType.getType().getBinding());

代码示例来源：origin: geotools/geotools

polySymb.getStroke().setWidth(filterFactory.literal(size));
  polySymb.getOptions().put(PolygonSymbolizer.GRAPHIC_MARGIN_KEY, "15");
  PolygonSymbolizer rescaledPolySymb = (PolygonSymbolizer) visitor.getCopy();
  double rescaledSize =
      rescaledPolySymb.getStroke().getWidth().evaluate(null, Double.class);
          .get(TextSymbolizer.GRAPHIC_MARGIN_KEY)
          .split("\\s+");
  int rescaledGraphicMargin = Converters.convert(splitted[0], Integer.class).intValue();
  assertEquals(expectedGraphicMargin, rescaledGraphicMargin);
} catch (Exception e2) {