Example usage for org.apache.commons.jxpath Variables getVariable

Introduction

In this page you can find the example usage for org.apache.commons.jxpath Variables getVariable.

Prototype

Object getVariable(String varName);

Source Link

Document

Returns the value of the specified variable.

Usage

From source file:org.chiba.xml.xforms.xpath.CoreExtensionFunctions.java

/**
 * Undeclares the specified variable an returns its value.
 *
 * @param expressionContext the expression context.
 * @param name the name of the variable.
 * @return the value of the variable./*from w  w  w  .  j av  a2s.  co  m*/
 */
public static Object undeclare(ExpressionContext expressionContext, String name) {
    Variables variables = expressionContext.getJXPathContext().getVariables();
    Object value = variables.getVariable(name);
    variables.undeclareVariable(name);

    return value;
}

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From source file:org.openvpms.archetype.function.expression.ExpressionFunctions.java

/**
 * Evaluates a variable, if it exists.//from w w  w .  ja  va2 s  . co  m
 *
 * @param context the expression context
 * @param name    the variable name
 * @return the value of the variable, or {@code elseValue} if it doesn't exist
 */
public Object var(ExpressionContext context, String name, Object elseValue) {
    Variables variables = context.getJXPathContext().getVariables();
    if (variables.isDeclaredVariable(name)) {
        return variables.getVariable(name);
    }
    return elseValue;
}

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