Examples of javax.el.ELResolver.invoke()

javax.el.ELResolver.invoke()
Attemps to resolve and invoke the given method on the given base object.
If this resolver handles the given (base, method) pair, the propertyResolved property of the ELContext object must be set to true by the resolver, before returning. If this property is not true after this method is called, the caller should ignore the return value.

A default implementation is provided that returns null so that existing classes that extend ELResolver can continue to function.
@param context The context of this evaluation. @param base The bean on which to invoke the method @param method The simple name of the method to invoke.Will be coerced to a String. @param paramTypes An array of Class objects identifying themethod's formal parameter types, in declared order. Use an empty array if the method has no parameters. Can be null, in which case the method's formal parameter types are assumed to be unknown. @param params The parameters to pass to the method, ornull if no parameters. @return The result of the method invocation (null ifthe method has a void return type). @throws MethodNotFoundException if no suitable method can be found. @throws ELException if an exception was thrown while performing(base, method) resolution. The thrown exception must be included as the cause property of this exception, if available. If the exception thrown is an InvocationTargetException, extract its cause and pass it to the ELException constructor. @since EL 2.2

                if (this.children[i] instanceof AstDotSuffix) {
                    params = ((AstDotSuffix) this.children[i]).getParameters(ctx);
                }
                if (params != null && params.length > 0) {
                    ctx.setPropertyResolved(false);
                    base = resolver.invoke(ctx, base, property, null, params);
                } else {
                    ctx.setPropertyResolved(false);
                    base = resolver.getValue(ctx, base, property);
                }
            }

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        }
        Object result = null;
        if (params != null && params.length > 0) {
            ELResolver resolver = ctx.getELResolver();
            ctx.setPropertyResolved(false);
            result = resolver.invoke(ctx, t.base, t.property, null, params);
        } else {
            Method m = ReflectionUtil.getMethod(t.base, t.property, paramTypes);
            try {
                result = m.invoke(t.base, (Object[]) paramValues);
            } catch (IllegalAccessException iae) {

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            if (i + 1 < propCount &&
                    (this.children[i+1] instanceof AstMethodParameters)) {
                AstMethodParameters mps =
                    (AstMethodParameters) this.children[i+1];
                // This is a method
                base = resolver.invoke(ctx, base, suffix, null,
                        mps.getParameters(ctx));
                i+=2;
            } else {
                // This is a property
                if (suffix == null) {

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        ELResolver resolver = ctx.getELResolver();
        while (i < propCount) {
            if (i + 2 < propCount &&
                    this.children[i + 1] instanceof AstMethodParameters) {
                // Method call not at end of expression
                base = resolver.invoke(ctx, base,
                        this.children[i].getValue(ctx), null,
                        ((AstMethodParameters)
                                this.children[i + 1]).getParameters(ctx));
                i += 2;
            } else if (i + 2 == propCount &&

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                                "stream.optional.paramNotLambda", suffix));
                    }
                }
                // This is a method
                Object[] paramValues = mps.getParameters(ctx);
                base = resolver.invoke(ctx, base, suffix,
                        getTypesFromValues(paramValues), paramValues);
                i+=2;
            } else {
                // This is a property
                if (suffix == null) {

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        ELResolver resolver = ctx.getELResolver();
        while (i < propCount) {
            if (i + 2 < propCount &&
                    this.children[i + 1] instanceof AstMethodParameters) {
                // Method call not at end of expression
                base = resolver.invoke(ctx, base,
                        this.children[i].getValue(ctx), null,
                        ((AstMethodParameters)
                                this.children[i + 1]).getParameters(ctx));
                i += 2;
            } else if (i + 2 == propCount &&

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            if (i + 1 < propCount &&
                    (this.children[i+1] instanceof AstMethodParameters)) {
                AstMethodParameters mps =
                    (AstMethodParameters) this.children[i+1];
                // This is a method
                base = resolver.invoke(ctx, base, suffix, null,
                        mps.getParameters(ctx));
                i+=2;
            } else {
                // This is a property
                if (suffix == null) {

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            if (i + 1 < propCount &&
                    (this.children[i+1] instanceof AstMethodParameters)) {
                AstMethodParameters mps =
                    (AstMethodParameters) this.children[i+1];
                // This is a method
                base = resolver.invoke(ctx, base, suffix, null,
                        mps.getParameters(ctx));
                i+=2;
            } else {
                // This is a property
                if (suffix == null) {

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            if (i + 1 < propCount &&
                    (this.children[i+1] instanceof AstMethodParameters)) {
                AstMethodParameters mps =
                    (AstMethodParameters) this.children[i+1];
                // This is a method
                base = resolver.invoke(ctx, base, suffix,
                        mps.getParameterTypes(ctx), mps.getParameters(ctx));
                i+=2;
            } else {
                // This is a property
                if (suffix == null) {

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            if (i + 1 < propCount &&
                    (this.children[i+1] instanceof AstMethodParameters)) {
                AstMethodParameters mps =
                    (AstMethodParameters) this.children[i+1];
                // This is a method
                base = resolver.invoke(ctx, base, suffix,
                        mps.getParameterTypes(ctx), mps.getParameters(ctx));
                i+=2;
            } else {
                // This is a property
                if (suffix == null) {

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