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Java JexlEngine.createExpression方法代碼示例

本文整理匯總了Java中org.apache.commons.jexl2.JexlEngine.createExpression方法的典型用法代碼示例。如果您正苦於以下問題：Java JexlEngine.createExpression方法的具體用法？Java JexlEngine.createExpression怎麽用？Java JexlEngine.createExpression使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.apache.commons.jexl2.JexlEngine的用法示例。


在下文中一共展示了JexlEngine.createExpression方法的12個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: setup

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
public void setup(Context context) {
  dumpHomepages = context.getConfiguration().getBoolean(HOSTDB_DUMP_HOMEPAGES, false);
  dumpHostnames = context.getConfiguration().getBoolean(HOSTDB_DUMP_HOSTNAMES, false);
  String expr = context.getConfiguration().get(HOSTDB_FILTER_EXPRESSION);
  if (expr != null) {
    // Create or retrieve a JexlEngine
    JexlEngine jexl = new JexlEngine();
    
    // Dont't be silent and be strict
    jexl.setSilent(true);
    jexl.setStrict(true);
    
    // Create an expression object
    this.expr = jexl.createExpression(expr);
  }
}
開發者ID:jorcox，項目名稱:GeoCrawler，代碼行數:17，代碼來源:ReadHostDb.java

示例2: isAboveThreshold

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
/**
 *
 */
@Override
public boolean isAboveThreshold(MetricTimeSeries timeSeries)
{
  Set<Long> timeWindowSet = timeSeries.getTimeWindowSet();
  JexlEngine jexl = new JexlEngine();
  JexlContext context = new MapContext();
  Expression e = jexl.createExpression(this.thresholdExpr);
  for(String metricName : metricNames){
    long sum = 0;
    for (Long timeWindow : timeWindowSet) {
      sum += timeSeries.get(timeWindow, metricName).longValue();
    }
    context.set(metricName, sum);
    if (LOGGER.isDebugEnabled()) {
      LOGGER.debug(metricName + " = " + sum);
    }
  }
  return ((Boolean)e.evaluate(context)).booleanValue();
}
開發者ID:Hanmourang，項目名稱:Pinot，代碼行數:23，代碼來源:MultiMetricTotalAggregateBasedRollupFunction.java

示例3: testPower

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
@Test
public void testPower() {
	JexlEngine engine = ExpressionEvalFactory.getInstance();
	Expression expr = engine.createExpression("X^2");

	JexlContext context = new MapContext();
	// Don't need this really
	context.set("A", 20);
	context.set("B", 0);

	ArrayList<Double> actualList = new ArrayList<>();
	for (int i = -20; i < 20; i++) {
		context.set("X", i);
		Double result = (Double) expr.evaluate(context);
		actualList.add(result);
		System.out.println(result + ",");
	}

	Double[] actual = actualList.toArray(new Double[0]);
	Double[] expected = {400.0, 361.0, 324.0, 289.0, 256.0, 225.0, 196.0,
		169.0, 144.0, 121.0, 100.0, 81.0, 64.0, 49.0, 36.0, 25.0, 16.0,
		9.0, 4.0, 1.0, 0.0, 1.0, 4.0, 9.0, 16.0, 25.0, 36.0, 49.0, 64.0,
		81.0, 100.0, 121.0, 144.0, 169.0, 196.0, 225.0, 256.0, 289.0,
		324.0, 361.0};
	Assert.assertArrayEquals("results wrong", expected, actual);
}
開發者ID:umeding，項目名稱:fuzzer，代碼行數:27，代碼來源:JEXLTest.java

示例4: _resolveAllFromSameSentence

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
private static void _resolveAllFromSameSentence(Document d, String filter, String comment) {        
    JexlEngine jexl = new JexlEngine();
    jexl.setSilent(JEXL_SILENT);
    jexl.setLenient(JEXL_LENIENT);
    jexl.setDebug(JEXL_DBG);
    Expression expression = jexl.createExpression(filter);
    JexlContext jexlContext = new MapContext();
    jexlContext.set("Filter", Filter.class);
    for (Mention s: d.mentions) {
        jexlContext.set("s", s);
        List<Mention> tt = MentionBrowser.getAllFromSameSentence(s, expression, jexlContext);      
        for (Mention t : tt) {
            _resolve(d, s, t, comment);
        }
        
    }
}
開發者ID:aznotins，項目名稱:LVCoref，代碼行數:18，代碼來源:Resolve.java

示例5: parseExpression

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
/**
 * Parses the given experssion to a Jexl expression. This supports
 * date parsing.
 *
 * @param expr the Jexl expression
 * @return parsed Jexl expression or null in case of parse error
 */
public static Expression parseExpression(String expr) {
  if (expr == null) return null;
  
  try {
    // Translate any date object into a long, dates must be specified as 20-03-2016T00:00:00Z
    Matcher matcher = datePattern.matcher(expr);
    if (matcher.find()) {
      String date = matcher.group();
      
      // Parse the thing and get epoch!
      Date parsedDate = DateUtils.parseDateStrictly(date, new String[] {"yyyy-MM-dd'T'HH:mm:ss'Z'"});
      long time = parsedDate.getTime();
      
      // Replace in the original expression
      expr = expr.replace(date, Long.toString(time));
    }
    
    JexlEngine jexl = new JexlEngine();
    jexl.setSilent(true);
    jexl.setStrict(true);
    return jexl.createExpression(expr);
  } catch (Exception e) {
    LOG.error(e.getMessage());
  }
  
  return null;
}
開發者ID:jorcox，項目名稱:GeoCrawler，代碼行數:35，代碼來源:JexlUtil.java

示例6: testJexl

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
public void testJexl() {
    JexlEngine engine = new JexlEngine();
    
    Map<String, Object> values = new HashMap<String, Object>();
    values.put("a", 12);
    values.put("b", "abcde");
    values.put("c", new Test());
    values.put("$row", new Row(42));
    
    Expression expression = engine.createExpression("'I see ' + $row.bnode");
    
    Object result = expression.evaluate(new MapContext(values));
    
    System.out.println(" -> " + result);
}
開發者ID:epimorphics，項目名稱:dclib，代碼行數:16，代碼來源:Temp.java

示例7: _resolveFirst

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
private static void _resolveFirst(Document d, String filter, String comment) {        
    JexlEngine jexl = new JexlEngine();
    jexl.setSilent(JEXL_SILENT);
    jexl.setLenient(JEXL_LENIENT);
    jexl.setDebug(JEXL_DBG);
    Expression expression = jexl.createExpression(filter);
    JexlContext jexlContext = new MapContext();
    jexlContext.set("Filter", Filter.class);
    Mention t;
    for (Mention s: d.mentions) {
        jexlContext.set("s", s);
        t = MentionBrowser.getFirst(s, expression, jexlContext);            
        if (t != null) _resolve(d, s, t, comment);
    }
}
開發者ID:aznotins，項目名稱:LVCoref，代碼行數:16，代碼來源:Resolve.java

示例8: _resolveFirstFromSintax

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
private static void _resolveFirstFromSintax(Document d, String filter, String comment) {        
    JexlEngine jexl = new JexlEngine();
    jexl.setSilent(JEXL_SILENT);
    jexl.setLenient(JEXL_LENIENT);
    jexl.setDebug(JEXL_DBG);
    Expression expression = jexl.createExpression(filter);
    JexlContext jexlContext = new MapContext();
    jexlContext.set("Filter", Filter.class);
    Mention t;
    for (Mention s: d.mentions) {
        jexlContext.set("s", s);
        t = MentionBrowser.getFirstFromSintax(s, expression, jexlContext); 
        if (t != null) _resolve(d, s, t, comment);
    }
}
開發者ID:aznotins，項目名稱:LVCoref，代碼行數:16，代碼來源:Resolve.java

示例9: _resolveFirstFromAll

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
private static void _resolveFirstFromAll(Document d, String filter, String comment) {        
    JexlEngine jexl = new JexlEngine();
    jexl.setSilent(JEXL_SILENT);
    jexl.setLenient(JEXL_LENIENT);
    jexl.setDebug(JEXL_DBG);
    Expression expression = jexl.createExpression(filter);
    JexlContext jexlContext = new MapContext();
    jexlContext.set("Filter", Filter.class);
    Mention t;
    for (Mention s: d.mentions) {
        jexlContext.set("s", s);
        t = MentionBrowser.getFirstFromAll(s, expression, jexlContext);            
        if (t != null) _resolve(d, s, t, comment);
    }
}
開發者ID:aznotins，項目名稱:LVCoref，代碼行數:16，代碼來源:Resolve.java

示例10: piecewiseFunctionTest

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
@Test
	public void piecewiseFunctionTest() {
		System.out.println("piecewise function test");

		Variable v = new Variable("a", -50, 50, 1);

//    FUNCTION S
//        FROM < TO A IS 0
//        FROM A TO B IS 2*((X-A)/(C-A))^2
//        FROM B TO C IS 1 - 2*((X-C)/(C-A))^2
//        FROM C TO > IS 1
		PiecewiseFunction s = new PiecewiseFunction("S", "x");
		s.addParameter("A", "B", "C");
		s.add("<", "A", "0");
		s.add("A", "B", "2*(((x-A)/(C-A))^2)");
		s.add("B", "C", "1 - (2*(((x-C)/(C-A))^2))");
		s.add("C", ">", "1");

		FunctionCall sCall = new FunctionCall(s);
		sCall.bindParameter(-30).bindParameter(-20).bindParameter(0);

		Member nb = v.addMember("NB", sCall);

//    FUNCTION PI
//        FROM <       TO B-A     IS 0
//        FROM B-A     TO B-(A/2) IS 2*((X-2(B-A))/A)^2
//        FROM B-(A/2) TO B+(A/2) IS 1 - 2*((X-B)/A)^2
//        FROM B+(A/2) TO B+A     IS 2*((X-(B+A))/A)^2
//        FROM B+A     TO >        IS 0
		PiecewiseFunction pi = new PiecewiseFunction("PI", "x");
		pi.addParameter("A", "B");
		pi.add("<", "B-A", "0");
		pi.add("B-A", "B-(A/2)", "2*(((x-(B-A))/A)^2)");
		pi.add("B-(A/2)", "B+(A/2)", "1 - (2*(((x-B)/A)^2))");
		pi.add("B+(A/2)", "B+A", "2*(((x-(B+A))/A)^2)");
		pi.add("B+A", ">", "0");

		FunctionCall piCall = new FunctionCall(pi);
		piCall.bindParameter(20).bindParameter(0);

		Member ns = v.addMember("NS", piCall);

//	      FUZZY Z   MEMBERS -10,0 0,1 10,0
		Member z = v.addMember("Z").add(-10, 0).add(0, 1).add(10, 0);

//        FUZZY PS  MEMBERS 0,0 15,1 30,0
		Member ps = v.addMember("PS").add(0, 0).add(15, 1).add(30, 0);

//        FUZZY PB  MEMBERS 20,0 30,1 50,1
		Member pb = v.addMember("PB").add(20, 0).add(30, 1).add(50, 1);

		v.calculateFuzzySpace();

		dumpNormalized(nb, ns, z, ps, pb);

		// apply hedge
		JexlEngine engine = ExpressionEvalFactory.getInstance();
		Expression expr = engine.createExpression("x^2");

		JexlContext context = new MapContext();
		for (int i = 0; i < nb.normalized().size(); i++) {
			Number n = nb.normalized().get(i);
			context.set("x", n.doubleValue() / 255.);
			Number nhedge = 255. * (Double) expr.evaluate(context);
			System.out.println(i + " " + n + " -> " + nhedge.intValue());
		}

	}
開發者ID:umeding，項目名稱:fuzzer，代碼行數:69，代碼來源:VariableMembersTest.java

示例11: keyReleased

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
public void keyReleased(KeyEvent ke){
	String txt = text.getText();
	
	// We have a formula, if the string starts with "="
	if (txt.startsWith("=")) {
		String formula;
		if (txt.contains(";")) {
			formula = txt.substring(1, txt.indexOf(";"));
			
			Map<String, Object> functions = new HashMap<>();
			functions.put("math", Math.class);
			JexlEngine jexl = new JexlEngine();
			jexl.setLenient(false);
			jexl.setFunctions(functions);
			
			try {
				Expression expr = jexl.createExpression(formula);
				Object result = expr.evaluate(new MapContext());
				text.setText("");
				text.setMessage(formula + "=" + result + "");
				result = null;
			} catch (JexlException e) {
				text.setText("");
				text.setMessage("Invalid expression: " + formula);
			}
		}
		return;
	}
	
	if (txt.length() > 1) {
		filterPositionTitle.setSearchText(txt);
		viewer.getControl().setRedraw(false);
		viewer.refresh();
		viewer.getControl().setRedraw(true);
	} else {
		filterPositionTitle.setSearchText(null);
		viewer.getControl().setRedraw(false);
		viewer.refresh();
		viewer.getControl().setRedraw(true);
	}
}
開發者ID:elexis，項目名稱:elexis-3-core，代碼行數:42，代碼來源:ContactSelectorView.java

示例12: evaluate

import org.apache.commons.jexl2.JexlEngine; //導入方法依賴的package包/類
/**
 * @param expression the expression.
 * @param vars the variables, can be null.
 * @param strict indicates whether to use strict or lenient engine mode.
 * @return the result of the evaluation.
 */
private static Object evaluate( String expression, Map<String, Object> vars, boolean strict )
{
    expression = expression.replaceAll( IGNORED_KEYWORDS_REGEX, StringUtils.EMPTY );
    
    JexlEngine engine = strict ? JEXL_STRICT : JEXL;
    
    Expression exp = engine.createExpression( expression );
    
    JexlContext context = vars != null ? new MapContext( vars ) : new MapContext();
    
    return exp.evaluate( context );
}
開發者ID:dhis2，項目名稱:dhis2-core，代碼行數:19，代碼來源:ExpressionUtils.java


注：本文中的org.apache.commons.jexl2.JexlEngine.createExpression方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。