@sap/odata-v4/lib/uri/FilterParser.js

OData V4.0 server library

'use strict';

const ExpressionParser = require('./ExpressionParser');
const EdmPrimitiveTypeKind = require('../edm/EdmPrimitiveTypeKind');

class FilterParser {

    /**
     * Create a filter parser.
     * @param {Edm} edm entity data model
     */
    constructor(edm) {
        this._edm = edm;
    }

    /**
     * Parse a filter string into an expression tree.
     * @param {UriTokenizer} tokenizer tokenizer containing the string to be parsed
     * @param {?EdmType} referencedType type the expression references
     * @param {?(EdmEntitySet[])} crossjoinEntitySets entity sets in case of a $crossjoin request
     * @param {?Object} aliases alias definitions
     * @returns {Expression} the root of the expression tree
     * @throws {UriSyntaxError}
     * @throws {UriQueryOptionSemanticError}
     */
    parse(tokenizer, referencedType, crossjoinEntitySets, aliases) {
        const expressionParser = new ExpressionParser(this._edm);
        const filterExpression = expressionParser.parse(tokenizer, referencedType, crossjoinEntitySets, aliases);
        expressionParser.checkNoCollection(filterExpression);
        expressionParser.checkType(filterExpression, EdmPrimitiveTypeKind.Boolean);
        return filterExpression;
    }
}

module.exports = FilterParser;