本文整理汇总了Java中com.espertech.esper.epl.script.jsr223.JSR223Helper类的典型用法代码示例。如果您正苦于以下问题：Java JSR223Helper类的具体用法？Java JSR223Helper怎么用？Java JSR223Helper使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
JSR223Helper类属于com.espertech.esper.epl.script.jsr223包，在下文中一共展示了JSR223Helper类的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: validateScript
import com.espertech.esper.epl.script.jsr223.JSR223Helper; //导入依赖的package包/类
private void validateScript(ExpressionScriptProvided script) throws ExprValidationException {
String dialect = script.getOptionalDialect() == null ? services.getConfigSnapshot().getEngineDefaults().getScripts().getDefaultDialect() : script.getOptionalDialect();
if (dialect == null) {
throw new ExprValidationException("Failed to determine script dialect for script '" + script.getName() + "', please configure a default dialect or provide a dialect explicitly");
}
if (dialect.trim().toLowerCase(Locale.ENGLISH).equals("mvel")) {
if (!MVELInvoker.isMVELInClasspath(services.getEngineImportService())) {
throw new ExprValidationException("MVEL scripting engine not found in classpath, script dialect 'mvel' requires mvel in classpath for script '" + script.getName() + "'");
}
MVELHelper.verifyScript(script, services.getEngineImportService());
} else {
JSR223Helper.verifyCompileScript(script, dialect);
}
if (!script.getParameterNames().isEmpty()) {
HashSet<String> parameters = new HashSet<String>();
for (String param : script.getParameterNames()) {
if (parameters.contains(param)) {
throw new ExprValidationException("Invalid script parameters for script '" + script.getName() + "', parameter '" + param + "' is defined more then once");
}
parameters.add(param);
}
}
}
示例2: validateScript
import com.espertech.esper.epl.script.jsr223.JSR223Helper; //导入依赖的package包/类
private void validateScript(ExpressionScriptProvided script) throws ExprValidationException {
String dialect = script.getOptionalDialect() == null ? services.getConfigSnapshot().getEngineDefaults().getScripts().getDefaultDialect() : script.getOptionalDialect();
if (dialect == null) {
throw new ExprValidationException("Failed to determine script dialect for script '" + script.getName() + "', please configure a default dialect or provide a dialect explicitly");
}
if (dialect.trim().toLowerCase().equals("mvel")) {
if (!MVELInvoker.isMVELInClasspath()) {
throw new ExprValidationException("MVEL scripting engine not found in classpath, script dialect 'mvel' requires mvel in classpath for script '" + script.getName() + "'");
}
MVELHelper.verifyScript(script);
}
else {
JSR223Helper.verifyCompileScript(script, dialect);
}
if (!script.getParameterNames().isEmpty()) {
HashSet<String> parameters = new HashSet<String>();
for (String param : script.getParameterNames()) {
if (parameters.contains(param)) {
throw new ExprValidationException("Invalid script parameters for script '" + script.getName() + "', parameter '" + param + "' is defined more then once");
}
parameters.add(param);
}
}
}
示例3: run
import com.espertech.esper.epl.script.jsr223.JSR223Helper; //导入依赖的package包/类
/**
* MVEL does not support JSR 223.
* Making MVEL an Esper compile-time dependency is not desired.
* Script and MVEL performance comparison is not close and MVEL is faster.
*/
public void run(EPServiceProvider epService) throws Exception {
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("js");
String expressionFib = "fib(num); function fib(n) { if(n <= 1) return n; return fib(n-1) + fib(n-2); };";
String expressionTwo = "var words = new java.util.ArrayList();\n" +
"words.add('wordOne');\n" +
"words.add('wordTwo');\n" +
"words;\n";
Compilable compilingEngine = (Compilable) engine;
CompiledScript script = null;
try {
script = compilingEngine.compile(expressionTwo);
} catch (ScriptException ex) {
throw new RuntimeException("Script compiler exception: " + JSR223Helper.getScriptCompileMsg(ex), ex);
}
Bindings bindings = engine.createBindings();
bindings.put("epl", new MyEPLContext());
Object result = script.eval(bindings);
System.out.println(result + " typed " + (result != null ? result.getClass() : "null"));
long start = System.currentTimeMillis();
for (int i = 0; i < 1; i++) {
script.eval(bindings);
}
long end = System.currentTimeMillis();
long delta = end - start;
System.out.println("delta=" + delta);
}
示例4: testJSR223Sandboxed
import com.espertech.esper.epl.script.jsr223.JSR223Helper; //导入依赖的package包/类
/**
* MVEL does not support JSR 223.
* Making MVEL an Esper compile-time dependency is not desired.
* Script and MVEL performance comparison is not close and MVEL is faster.
*/
public void testJSR223Sandboxed() throws Exception {
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("js");
String expressionFib = "fib(num); function fib(n) { if(n <= 1) return n; return fib(n-1) + fib(n-2); };";
String expressionTwo = "importPackage(java.util);\n" +
"var words = new ArrayList();\n" +
"words.add('wordOne');\n" +
"words.add('wordTwo');\n" +
"words;\n";
Compilable compilingEngine = (Compilable)engine;
CompiledScript script = null;
try {
script = compilingEngine.compile(expressionTwo);
}
catch (ScriptException ex) {
throw new RuntimeException("Script compiler exception: " + JSR223Helper.getScriptCompileMsg(ex), ex);
}
Bindings bindings = engine.createBindings();
bindings.put("epl", new MyEPLContext());
Object result = script.eval(bindings);
System.out.println(result + " typed " + (result != null ? result.getClass() : "null"));
long start = System.currentTimeMillis();
for (int i = 0; i < 1; i++) {
script.eval(bindings);
}
long end = System.currentTimeMillis();
long delta = end - start;
System.out.println("delta=" + delta);
}