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/*  Copyright 1999 Vince Via [email protected]
    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.viaoa.datasource.jdbc.db;

import java.lang.reflect.Method;

import com.viaoa.object.*;
import com.viaoa.util.OAReflect;

/**
 * Used for mapping database Columns with OAObject properties. Column objects are stored in Table.columns[].
 */
public class Column { // need to select all with properyName!=null

	/** table that this column belongs to. */
	public Table table; // set by Table.setColumns()
	/** name of column in table */
	public String columnName;
	/** name of column in table that stores in lowercase, for case sensitive Databases */
	public String columnLowerName;
	/** name of property that column is mapped to. */
	public String propertyName;
	/** is this a primary key column. */
	public boolean primaryKey;
	/** flag to know if this is a foreign key. */
	public boolean foreignKey; // set by Table.setColumns() & Table.setLinks() if this column is a fkey in a link

	public Class clazz; // 20090301 set by Table.setColumns() & Table.setLinks() if this column is a fkey in a link
	/** type of column variable, java.sql.Types. */
	public int type; // from sql.Types
	/** maximum length of column. */
	public int maxLength;
	/** amount of decimal places for a numeric column. */
	public int decimalPlaces = -1;

	/** flag to know if column is a autonumber. */
	public boolean assignNextNumber; // assign seq number to a new object
	/** flag to know if column is a global unique identifier. */
	public boolean guid;

	public boolean unicode;

	public boolean json;

	public boolean fullTextIndex;

	public Link fkeyLink; // 20090301 set by Table.setColumns() & Table.setLinks() if this column is a fkey in a link
	public int fkeyLinkPos; // 20090301 set by Table.setColumns() & Table.setLinks() if this column is a fkey in a link
	public Column fkeyToColumn; // 20090301 set by Table.setColumns() & Table.setLinks() if this column is a fkey in a link

	// 2007/03/08
	public boolean caseSensitive;

	public boolean readOnly;

	/** methods to get property value. */
	Method methodGet;
	/** methods to set property value. */
	Method methodSet;

	public Column() {
	}

	public Column(String columnName) {
		this(columnName, "", 0, 0);
	}

	public Column(String columnName, boolean fkey) {
		this(columnName, "", 0, 0);
		foreignKey = fkey;
	}

	public Column(String columnName, String propertyName) {
		this(columnName, propertyName, 0, 0);
	}

	public Column(String columnName, String propertyName, int type) {
		this.columnName = columnName;
		this.propertyName = propertyName;
		this.type = type;
	}

	public Column(String columnName, String propertyName, int type, int maxLength) {
		this.columnName = columnName;
		this.propertyName = propertyName;
		this.type = type;
		this.maxLength = maxLength;
	}

	public int getSqlType() {
		return type;
	}

	/**
	 * Method used to get property value.
	 */
	public Method getGetMethod() {
		if (methodGet == null && table != null) {
			Class clazz = table.getSupportClass();
			if (clazz != null && propertyName != null && propertyName.length() != 0) {
			    methodGet = OAObjectInfoDelegate.getMethod(clazz, "get" + propertyName);
				//was: methodGet = OAReflect.getMethod(clazz, "get" + propertyName);
			}
		}
		return methodGet;
	}

	/**
	 * Method used to set property value.
	 */
	public Method getSetMethod() {
		if (methodSet == null && table != null) {
			Class clazz = table.getSupportClass();
			if (clazz != null && propertyName != null && propertyName.length() != 0) {
			    methodSet = OAObjectInfoDelegate.getMethod(clazz, "set" + propertyName);
				//was: methodSet = OAReflect.getMethod(clazz, "set" + propertyName);
			}
		}
		return methodSet;
	}
}