Example usage for javax.script CompiledScript getEngine

Introduction

In this page you can find the example usage for javax.script CompiledScript getEngine.

Prototype

public abstract ScriptEngine getEngine();

Source Link

Document

Returns the ScriptEngine whose compile method created this CompiledScript.

Usage

From source file:org.openhab.binding.ebus.internal.parser.EBusTelegramParser.java

/**
 * Evaluates the compiled script of a entry.
 * @param entry The configuration entry to evaluate
 * @param scopeValues All known values for script scope
 * @return The computed value/*from  ww w.ja v  a  2 s .c  o m*/
 * @throws ScriptException
 */
private Object evaluateScript(Entry<String, Map<String, Object>> entry, Map<String, Object> scopeValues)
        throws ScriptException {

    Object value = null;

    // executes compiled script
    if (entry.getValue().containsKey("cscript")) {
        CompiledScript cscript = (CompiledScript) entry.getValue().get("cscript");

        // Add global variables thisValue and keyName to JavaScript context
        Bindings bindings = cscript.getEngine().createBindings();
        bindings.putAll(scopeValues);
        value = cscript.eval(bindings);
    }

    // try to convert the returned value to BigDecimal
    value = ObjectUtils.defaultIfNull(NumberUtils.toBigDecimal(value), value);

    // round to two digits, maybe not optimal for any result
    if (value instanceof BigDecimal) {
        ((BigDecimal) value).setScale(2, BigDecimal.ROUND_HALF_UP);
    }

    return value;
}

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From source file:org.openhab.binding.ebus.parser.EBusTelegramParser.java

/**
 * @param entry//w  ww.  j ava  2 s .c  o  m
 * @param bindings2
 * @return
 * @throws ScriptException
 */
private Object evaluateScript(Entry<String, Map<String, Object>> entry, Map<String, Object> bindings2)
        throws ScriptException {
    Object value = null;
    if (entry.getValue().containsKey("cscript")) {
        CompiledScript cscript = (CompiledScript) entry.getValue().get("cscript");

        // Add global variables thisValue and keyName to JavaScript context
        Bindings bindings = cscript.getEngine().createBindings();
        bindings.putAll(bindings2);
        value = cscript.eval(bindings);
    }

    value = ObjectUtils.defaultIfNull(NumberUtils.toBigDecimal(value), value);

    // round to two digits, maybe not optimal for any result
    if (value instanceof BigDecimal) {
        ((BigDecimal) value).setScale(2, BigDecimal.ROUND_HALF_UP);
    }

    return value;
}

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