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 *  or more contributor license agreements.  See the NOTICE file
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 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.project.validation;

import org.apache.cayenne.configuration.DataChannelDescriptor;
import org.apache.cayenne.map.DataMap;
import org.apache.cayenne.map.Embeddable;
import org.apache.cayenne.util.Util;
import org.apache.cayenne.validation.ValidationResult;

class EmbeddableValidator extends ConfigurationNodeValidator {

    void validate(Embeddable embeddable, ValidationResult validationResult) {

        String name = embeddable.getClassName();

        // Must have name
        if (Util.isEmptyString(name)) {
            addFailure(validationResult, embeddable, "Unnamed Embeddable");
            return;
        }

        DataMap map = embeddable.getDataMap();
        if (map == null) {
            return;
        }

        // check for duplicate names in the parent context
        for (Embeddable otherEmb : map.getEmbeddables()) {
            if (otherEmb == embeddable) {
                continue;
            }

            if (name.equals(otherEmb.getClassName())) {

                addFailure(
                        validationResult,
                        embeddable,
                        "Duplicate Embeddable class name: %s",
                        name);
                break;
            }
        }

        // check for duplicates in other DataMaps
        DataChannelDescriptor domain = map.getDataChannelDescriptor();
        if (domain != null) {
            for (DataMap nextMap : domain.getDataMaps()) {
                if (nextMap == map) {
                    continue;
                }

                // note that lookuo below will return the same embeddable due to the
                // shared namespace if not conflicts exist
                Embeddable conflictingEmbeddable = nextMap.getEmbeddable(name);
                if (conflictingEmbeddable != null && conflictingEmbeddable != embeddable) {
                    addFailure(
                            validationResult,
                            embeddable,
                            "Duplicate Embeddable name in another DataMap: %s",
                            name);
                    break;
                }
            }
        }
    }
}