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 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
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 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Other licenses:
 * -----------------------------------------------------------------------------
 * Commercial licenses for this work are available. These replace the above
 * ASL 2.0 and offer limited warranties, support, maintenance, and commercial
 * database integrations.
 *
 * For more information, please visit: http://www.jooq.org/licenses
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package org.jooq.impl;

import org.jooq.Comment;
import org.jooq.Name;
import org.jooq.Named;
import org.jooq.tools.StringUtils;

Author:
Lukas Eder/**
 * @author Lukas Eder
 */
abstract class AbstractNamed extends AbstractQueryPart implements Named {

    private static final long serialVersionUID = 4569512766643813958L;
    private final Name        name;
    private final Comment     comment;

    AbstractNamed(Name name, Comment comment) {
        this.name = name == null ? AbstractName.NO_NAME : name;
        this.comment = comment == null ? CommentImpl.NO_COMMENT : comment;
    }

    // -------------------------------------------------------------------------
    // The Named API
    // -------------------------------------------------------------------------

    @Override
    public final String getName() {
        return StringUtils.defaultIfNull(getQualifiedName().last(), "");
    }

    /* [#7172] For lazy initialisation reasons, some subtypes need to override this method */
    @Override
    public /* non-final */ Name getQualifiedName() {
        return name;
    }

    @Override
    public final Name getUnqualifiedName() {
        return name.unqualifiedName();
    }

    @Override
    public final String getComment() {
        return comment.getComment();
    }

    @Override
    public final Comment getCommentPart() {
        return comment;
    }

    // -------------------------------------------------------------------------
    // The Object API
    // -------------------------------------------------------------------------

    @Override
    public int hashCode() {

        // [#1938] This is a much more efficient hashCode() implementation
        // compared to that of standard QueryParts
        return getQualifiedName() == null ? 0 : getQualifiedName().hashCode();
    }

    @Override
    public boolean equals(Object that) {
        if (this == that)
            return true;
        if (that == null)
            return false;

        // [#2144] Non-equality can be decided early, without executing the
        // rather expensive implementation of AbstractQueryPart.equals()
        if (that instanceof AbstractNamed)
            if (!getQualifiedName().equals(((AbstractNamed) that).getQualifiedName()))
                return false;

        return super.equals(that);
    }

    // -------------------------------------------------------------------------
    // Utilities
    // -------------------------------------------------------------------------

    static final Name qualify(Named qualifier, Name name) {
        // [#9820] [#11292] name == null || name.empty() are special cases that
        //                  may appear when using unnamed constraint declarations.
        //                  Their unnamedness must not be changed, nor qualified!
        return qualifier == null || name == null || name.empty() || name.qualified() ? name : qualifier.getQualifiedName().append(name);
    }

    static final <N extends Named> N find(String name, Iterable<? extends N> in) {
        for (N n : in)
            if (n.getName().equals(name))
                return n;

        return null;
    }

    static final <N extends Named> N find(Name name, Iterable<? extends N> in) {
        N unqualified = null;

        for (N n : in)
            if (n.getQualifiedName().equals(name))
                return n;
            else if (unqualified == null && n.getUnqualifiedName().equals(name.unqualifiedName()))
                unqualified = n;

        return unqualified;
    }

    static final <N extends Named> N findIgnoreCase(String name, Iterable<? extends N> in) {
        for (N n : in)
            if (n.getName().equalsIgnoreCase(name))
                return n;

        return null;
    }

    static final <N extends Named> N findIgnoreCase(Name name, Iterable<? extends N> in) {
        N unqualified = null;

        for (N n : in)
            if (n.getQualifiedName().equalsIgnoreCase(name))
                return n;
            else if (unqualified == null && n.getUnqualifiedName().equalsIgnoreCase(name.unqualifiedName()))
                unqualified = n;

        return unqualified;
    }
}