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/*
 * Copyright 2007 Daniel Spiewak
 * 
 * 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 net.java.ao.schema.ddl;

import java.util.Arrays;
import java.util.Comparator;

/**
 * Database-agnostic representation of a table within the schema.  A
 * table logically contains fields, keys and indexes (as represented
 * by this class).
 *
 * @author Daniel Spiewak
 */
public class DDLTable {
    private String name;

    private DDLField[] fields = {};
    private DDLForeignKey[] foreignKeys = {};
    private DDLIndex[] indexes = {};

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public DDLField[] getFields() {
        return fields;
    }

    public void setFields(DDLField[] fields) {
        Arrays.sort(fields, new FieldComparator());
        this.fields = fields;
    }

    public DDLForeignKey[] getForeignKeys() {
        return foreignKeys;
    }

    public void setForeignKeys(DDLForeignKey[] foreignKeys) {
        this.foreignKeys = foreignKeys;
    }

    public DDLIndex[] getIndexes() {
        return indexes;
    }

    public void setIndexes(DDLIndex[] indexes) {
        this.indexes = indexes;
    }

    @Override
    public String toString() {
        return getName();
    }

    @Override
    public int hashCode() {
        int back = 0;

        if (name != null) {
            back += name.hashCode();
        }

        return back;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof DDLTable) {
            DDLTable table = (DDLTable) obj;
            if (table == this) {
                return true;
            }

            if (table.getName() != null && table.getName().equals(name)) {
                return true;
            }

            return false;
        }

        return super.equals(obj);
    }

    private static class FieldComparator implements Comparator {
        public int compare(DDLField f1, DDLField f2) {
            if (f1 == null && f2 == null) return 0;
            if (f1 == null) return -1;
            if (f2 == null) return +1;
            return f1.getName().compareTo(f2.getName());
        }
    }
}