@sap/odata-v4/lib/edm/annotationExpression/EdmNegationExpression.js

OData V4.0 server library

'use strict';

const AnnotationFactory = require('./AnnotationExpressionFactory');
const CsdlAnnotationExpression = require('../../csdl/annotationExpression/CsdlAnnotationExpression');
const EdmAnnotationExpression = require('./EdmAnnotationExpression');
const validateThat = require('../../validator/ParameterValidator').validateThat;

/**
 * @extends EdmAnnotationExpression
 * @hideconstructor
 */
class EdmNegationExpression extends EdmAnnotationExpression {

    /**
     * @param {Edm} edm The edm itself
     * @param {CsdlNegationExpression} negationExpression
     */
    constructor(edm, negationExpression) {
        validateThat('edm', edm).truthy();
        validateThat('negationExpression', negationExpression).truthy();

        super(CsdlAnnotationExpression.kinds.Negation);

        /**
         * @type {Edm}
         * @private
         */
        this._edm = edm;

        /**
         * @type {CsdlNegationExpression}
         * @private
         */
        this._negationExpression = negationExpression;

        /**
         * @type {EdmAnnotationExpression}
         * @private
         */
        this._expression = AnnotationFactory.createEdmExpressionFromCsdlExpression(edm,
            this._negationExpression.expression);

        /**
         * @type {EdmAnnotation[]}
         * @private
         */
        this._annotations = null;
    }

    /**
     * Returns the expression to be negated
     *
     * @returns {EdmAnnotationExpression}
     */
    getExpression() {
        return this._expression;
    }

    /**
     * Returns the annotations for this expression
     *
     * @returns {EdmAnnotation[]}
     */
    getAnnotations() {
        if (!this._annotations) {
            this._annotations = this._negationExpression.annotations.map(
                item => AnnotationFactory.createAnnotation(this._edm, item));
        }
        return this._annotations;
    }
}

module.exports = EdmNegationExpression;