Java tutorial
/* Copyright 2013 Red Hat, Inc. and/or its affiliates. This file is part of lightblue. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.redhat.lightblue.query; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.node.ObjectNode; import com.redhat.lightblue.util.Error; /** * Base class for array contains and array match expressions */ public abstract class ArrayComparisonExpression extends ComparisonExpression { private static final long serialVersionUID = 1L; /** * Parses an array contains or array match expression from the given object * node */ public static ArrayComparisonExpression fromJson(ObjectNode node) { JsonNode x = node.get("contains"); if (x != null) { return ArrayContainsExpression.fromJson(node); } else { x = node.get("elemMatch"); if (x != null) { return ArrayMatchExpression.fromJson(node); } } throw Error.get(QueryConstants.ERR_INVALID_ARRAY_COMPARISON_EXPRESSION, node.toString()); } }