com.pros.jsontransform.constraint.ConstraintType.java Source code

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Here is the source code for com.pros.jsontransform.constraint.ConstraintType.java

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/*
 * Copyright (c) 2016 PROS, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

package com.pros.jsontransform.constraint;

import com.fasterxml.jackson.databind.JsonNode;
import com.pros.jsontransform.ObjectTransformer;
import com.pros.jsontransform.ObjectTransformerException;

public class ConstraintType {
    public static void validate(final JsonNode constraintNode, final JsonNode resultNode,
            final ObjectTransformer transformer) throws ObjectTransformerException {
        String type = constraintNode.get(Constraint.$TYPE.toString()).asText().toUpperCase();
        if (!JsonNodeType.valueOf(type).isValid(resultNode)) {
            throw new ObjectTransformerException("Constraint violation [" + Constraint.$TYPE.toString() + "]"
                    + " on transform node " + transformer.getTransformNodeFieldName());
        }
    }

    enum JsonNodeType {
        NUMBER {
            @Override
            boolean isValid(JsonNode node) {
                return node.isNumber();
            }
        },
        STRING {
            @Override
            boolean isValid(JsonNode node) {
                return node.isTextual();
            }
        },
        BOOLEAN {
            @Override
            boolean isValid(JsonNode node) {
                return node.isBoolean();
            }
        },
        OBJECT {
            @Override
            boolean isValid(JsonNode node) {
                return node.isObject();
            }
        },
        ARRAY {
            @Override
            boolean isValid(JsonNode node) {
                return node.isArray();
            }
        };

        abstract boolean isValid(JsonNode node);

        @Override
        public String toString() {
            return name().toLowerCase();
        }
    }
}