/*
 * Copyright 2013-2014 eBay Software Foundation
 *
 * 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.kylinolap.metadata.model.schema;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
import com.fasterxml.jackson.annotation.JsonProperty;

import java.util.HashMap;
import java.util.Map;

/**
 * Column Metadata from Source.   All name should be uppercase.
 * <p/>
 * User: lukhan
 * Date: 10/15/13
 * Time: 9:07 AM
 * To change this template use File | Settings | File Templates.
 */
@JsonAutoDetect(fieldVisibility = Visibility.NONE, getterVisibility = Visibility.NONE, isGetterVisibility = Visibility.NONE, setterVisibility = Visibility.NONE)
public class ColumnDesc {
    @JsonProperty("id")
    private String id;
    @JsonProperty("name")
    private String name;
    @JsonProperty("datatype")
    private String datatype;

    // parsed from data type
    private DataType type;

    private TableDesc table;
    private int zeroBasedIndex = -1;
    private boolean isNullable = true;

    public static final Map<String, String> LEGACY_TYPE_MAP = new HashMap<String, String>();

    static {
        LEGACY_TYPE_MAP.put("byte", "tinyint");
        LEGACY_TYPE_MAP.put("int", "integer");
        LEGACY_TYPE_MAP.put("short", "smallint");
        LEGACY_TYPE_MAP.put("long", "bigint");
        LEGACY_TYPE_MAP.put("string", "varchar");
    }

    public int getZeroBasedIndex() {
        return zeroBasedIndex;
    }

    public String getDatatype() {
        return datatype;
    }

    public void setDatatype(String datatype) {
        this.datatype = datatype;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

    public TableDesc getTable() {
        return table;
    }

    public void setTable(TableDesc table) {
        this.table = table;
    }

    public String getTypeName() {
        return type.getName();
    }

    public int getTypePrecision() {
        return type.getPrecision();
    }

    public int getTypeScale() {
        return type.getScale();
    }

    public void setNullable(boolean nullable) {
        this.isNullable = nullable;
    }

    public boolean isNullable() {
        return this.isNullable;
    }

    public void init(TableDesc table) {
        this.table = table;

        if (name != null)
            name = name.toUpperCase();

        if (id != null)
            zeroBasedIndex = Integer.parseInt(id) - 1;

        type = DataType.getInstance(datatype);
    }

    @Override
    public String toString() {
        return "ColumnDesc [name=" + name + ",table=" + table.getName() + "]";
    }

}