本文整理了Java中org.geotools.filter.Filters.getExpressionType()方法的一些代码示例，展示了Filters.getExpressionType()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.getExpressionType()方法的具体详情如下：
包路径：org.geotools.filter.Filters
类名称：Filters
方法名：getExpressionType

Filters.getExpressionType介绍

[英]Convert expression to a constant for use in switch statements. This is an alternative to performing instanceof checks. p> This utility method for those upgrading to a newer version of GeoTools, instance of checks are preferred as they will take into account new kinds of expressions as the filter specification grows over time. Example:

BEFORE: expression.getType() == ExpressionType.MATH_ADD 
QUICK:  Filters.getExpressionType( expression ) == ExpressionType.MATH_ADD 
AFTER: expression instanceof Add

[中]将表达式转换为常量，以便在switch语句中使用。这是执行instanceof检查的替代方法。p> 对于升级到较新版本的GeoTools的用户来说，这种实用方法是首选的，因为随着过滤器规范的不断增长，它们将考虑新的表达式类型。示例：

BEFORE: expression.getType() == ExpressionType.MATH_ADD 
QUICK:  Filters.getExpressionType( expression ) == ExpressionType.MATH_ADD 
AFTER: expression instanceof Add

代码示例

代码示例来源：origin: geotools/geotools

/**
 * Override of hashCode method.
 *
 * @return the hash code for this literal expression
 */
public int hashCode() {
  int result = 17;
  result = (37 * result) + ((literal == null) ? 0 : literal.hashCode());
  result = (37 * result) + Filters.getExpressionType(this);
  return result;
}

代码示例来源：origin: geotools/geotools

(Filters.getExpressionType(expAttr) == Filters.getExpressionType(this));
if (LOGGER.isLoggable(Level.FINEST))
  LOGGER.finest(
          + isEqual
          + "; in:"
          + Filters.getExpressionType(expAttr)
          + "; out:"
          + Filters.getExpressionType(this));
isEqual =
    (expAttr.attPath != null)

代码示例来源：origin: geotools/geotools

/**
 * Gets the left or first expression.
 *
 * @throws IllegalFilterException
 */
public void setExpression1(org.opengis.filter.expression.Expression expression) {
  if (isGeometryExpression(Filters.getExpressionType(expression))) {
    throw new IllegalFilterException(
        "Attempted to add Geometry expression to math expression.");
  }
  this.leftValue = expression;
}

代码示例来源：origin: geotools/geotools

/**
 * Gets the second expression.
 *
 * @throws IllegalFilterException
 */
public void setExpression2(org.opengis.filter.expression.Expression expression) {
  // Check to see if this is a valid math expression before adding.
  if (isGeometryExpression(Filters.getExpressionType(expression))) {
    throw new IllegalFilterException(
        "Attempted to add Geometry expression to math expression.");
  }
  this.rightValue = expression;
}

代码示例来源：origin: geotools/geotools

public void testGetType() {
  assertEquals(ExpressionType.FUNCTION, Filters.getExpressionType(function));
}

代码示例来源：origin: geotools/geotools

if (getExpressionType(this) == getExpressionType(expLit)) {
  if (this.literal.equals(expLit.literal)) {
    return true;
int expressionType = getExpressionType(this);
if (expressionType == ExpressionType.LITERAL_GEOMETRY) {
  return ((Geometry) this.literal).equalsExact(expLit.evaluate(null, Geometry.class));

代码示例来源：origin: geotools/geotools

if (ExpressionType.FUNCTION != Filters.getExpressionType(function)) {
  errors.add(functionClass + ".getType != " + ExpressionType.FUNCTION);

代码示例来源：origin: geotools/geotools

String uri = getNamespace().toString();
if (Filters.getExpressionType(distanceFilter.getExpression1())
    == ExpressionType.LITERAL_GEOMETRY) {
  Geometry geometry = distanceFilter.getExpression1().evaluate(null, Geometry.class);

代码示例来源：origin: geotools/geotools

int i = 0;
switch (Filters.getExpressionType(expr)) {

代码示例来源：origin: geotools/geotools

public void testLiteralExpression() {
  LiteralExpressionImpl literal;
  literal = new LiteralExpressionImpl(1.0D);
  assertEquals(ExpressionType.LITERAL_DOUBLE, Filters.getExpressionType(literal));
  assertEquals(new Double(1.0D), literal.evaluate((Feature) null));
  GeometryFactory gf = new GeometryFactory();
  literal = new LiteralExpressionImpl(gf.createPoint(new Coordinate(0, 0)));
  assertEquals(ExpressionType.LITERAL_GEOMETRY, Filters.getExpressionType(literal));
  Geometry value = (Geometry) literal.evaluate((Feature) null);
  assertTrue(gf.createPoint(new Coordinate(0, 0)).equalsExact(value));
  literal = new LiteralExpressionImpl(1);
  assertEquals(ExpressionType.LITERAL_INTEGER, Filters.getExpressionType(literal));
  assertEquals(Integer.valueOf(1), literal.evaluate((Feature) null));
  literal = new LiteralExpressionImpl(1L);
  assertEquals(ExpressionType.LITERAL_LONG, Filters.getExpressionType(literal));
  assertEquals(Long.valueOf(1), literal.evaluate((Feature) null));
  literal = new LiteralExpressionImpl("string value");
  assertEquals(ExpressionType.LITERAL_STRING, Filters.getExpressionType(literal));
  assertEquals("string value", literal.evaluate((Feature) null));
  literal = new LiteralExpressionImpl(new Date(0));
  assertEquals(ExpressionType.LITERAL_UNDECLARED, Filters.getExpressionType(literal));
  assertEquals(new Date(0), literal.evaluate((Feature) null));
  literal = new LiteralExpressionImpl(null);
  assertEquals(ExpressionType.LITERAL_UNDECLARED, Filters.getExpressionType(literal));
  assertNull(literal.evaluate((Feature) null));
}

代码示例来源：origin: geotools/geotools

output.startElement(element.getNamespace(), element.getName(), ai);
switch (Filters.getExpressionType(me)) {
  case org.geotools.filter.ExpressionType.LITERAL_GEOMETRY:
    if (me.getValue() instanceof Geometry) {

代码示例来源：origin: geotools/geotools

short TYPE1 = Filters.getExpressionType(lf.getExpression1());
short TYPE2 = Filters.getExpressionType(lf.getExpression2());
if (TYPE1 == org.geotools.filter.ExpressionType.LITERAL_GEOMETRY) {
  elems[0].getType()

代码示例来源：origin: org.geomajas.plugin/geomajas-layer-hibernate

public void setExpression(org.opengis.filter.expression.Expression e) {
  if (!(e instanceof Expression)) {
    throw new IllegalArgumentException("Expression " + e + " should be an Expression.");
  }
  Expression exprAttribute = (Expression) e;
  if ((Filters.getExpressionType(exprAttribute) != ExpressionType.ATTRIBUTE_STRING)) {
    this.attribute = exprAttribute;
  } else {
    throw new IllegalFilterException("Attempted to add something other than a string attribute "
        + "expression to a like filter.");
  }
}

代码示例来源：origin: geotools/geotools

if (Filters.getExpressionType(lf.getExpression1())
    == org.geotools.filter.ExpressionType.ATTRIBUTE) {
  elems[0].getType()
  if (Filters.getExpressionType(lf.getExpression2())
      == org.geotools.filter.ExpressionType.ATTRIBUTE) {
    elems[0].getType()

代码示例来源：origin: geotools/geotools

short type1 = Filters.getExpressionType(lf.getExpression1());
short type2 = Filters.getExpressionType(lf.getExpression2());
if ((type1 == org.geotools.filter.ExpressionType.LITERAL_STRING)
    || (type1 == org.geotools.filter.ExpressionType.ATTRIBUTE_STRING)

代码示例来源：origin: geotools/geotools

Expression e = (Expression) value;
switch (Filters.getExpressionType(e)) {
  case ATTRIBUTE:
  case ATTRIBUTE_DOUBLE: