package org.apache.magma.database.openjpa;

import javax.persistence.PrePersist;
import org.apache.magma.database.Database;

import org.apache.magma.database.LogicallyNamed;

public aspect LogicalNameHandling {

	@PrePersist
	public void LogicallyNamed.jpaInitializeLogicalName() {
		if (getLogicalName() != null) return;
		String tempname = this.computeLogicalName();
		tempname = tempname.toLowerCase();
		if (tempname == null) {
			tempname = this.getClass().getName() + System.currentTimeMillis() + System.nanoTime();
		}
		StringBuilder normalized = new StringBuilder();
		for (int i = 0; i < tempname.length(); i++) {
			char acc = tempname.charAt(i);
			if ((acc >= 'a' && acc <= 'z') || (acc >= '0' && acc <= '9')) {
				normalized.append(acc);
			} else if (acc == ' ' || acc == '-') {
				normalized.append('-');
			} else if (acc == '.') {
				normalized.append('.');				
			}
			if (normalized.length() == 30) break;
		}
		tempname = normalized.toString();
		Database db = new Database();
		if (db.count(this.getClass(), "x.logicalName=?1", tempname) > 0) {
			int prog = 2;
			while (db.count(this.getClass(), "x.logicalName=?1", tempname + "-" + prog) > 0) prog++;
			tempname += "-" + prog;
		}
		setLogicalName(tempname);
	}
	
}