Example usage for org.springframework.security.web.access.expression DefaultWebSecurityExpressionHandler getExpressionParser

Introduction

In this page you can find the example usage for org.springframework.security.web.access.expression DefaultWebSecurityExpressionHandler getExpressionParser.

Prototype

ExpressionParser getExpressionParser();

Source Link

Usage

From source file:it.scoppelletti.programmerpower.web.view.AuthorizeComponent.java

/**
 * Emette l’apertura del tag e verifica se deve essere emesso il
 * contenuto del tag stesso./*w  w  w  .j a  v  a 2  s . co m*/
 * 
 * @param  writer Flusso di scrittura.
 * @return        Esito della verifica.
 */
@Override
public boolean start(Writer writer) {
    Authentication currentUser;
    FilterInvocation filter;
    Expression accessExpr;
    DefaultWebSecurityExpressionHandler exprHandler;

    if (Strings.isNullOrEmpty(myAccess)) {
        throw new PropertyNotSetException(toString(), "access");
    }

    currentUser = SecurityContextHolder.getContext().getAuthentication();
    if (currentUser == null) {
        throw new ObjectNotFoundException(Authentication.class.getName());
    }

    exprHandler = getExpressionHandler();
    accessExpr = exprHandler.getExpressionParser().parseExpression(myAccess);

    filter = new FilterInvocation(ServletActionContext.getRequest(), ServletActionContext.getResponse(),
            new AuthorizeComponent.DummyChain());

    if (ExpressionUtils.evaluateAsBoolean(accessExpr,
            exprHandler.createEvaluationContext(currentUser, filter))) {
        return true;
    }

    return false;
}

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