base.jee.api.sql.GetSettings Maven / Gradle / Ivy

/*
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 means.

 In jurisdictions that recognize copyright laws, the author or authors
 of this software dedicate any and all copyright interest in the
 software to the public domain. We make this dedication for the benefit
 of the public at large and to the detriment of our heirs and
 successors. We intend this dedication to be an overt act of
 relinquishment in perpetuity of all present and future rights to this
 software under copyright law.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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 */
package base.jee.api.sql;

import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import javax.sql.DataSource;

import base.KeyValue;
import base.Query;
import base.jee.Constants;
import base.security.PermissionException;
import base.security.User;

import static base.jee.api.sql.util.Log.log;

public class GetSettings extends Query {

	private DataSource ds;
	private User user;

	public GetSettings(DataSource ds, User user) {
		this.ds = ds;
		this.user = user;
	}

	public GetSettings() {
	}

	@Override
	public Query newWithParameters(Map parameters) {
		return new GetSettings(
				((SqlAPI)parameters.get("api")).getDataSource(),
				(User)parameters.get("user"));
	}

	public List execute() throws IOException {
		List results = new LinkedList<>();
		Connection c = null;
		try {
			c = ds.getConnection();
			c.setAutoCommit(false);

			if(user != null && !user.hasRole(Constants.SETTING_MANAGE_ROLE)) {
				c.rollback();
				log(c, "WARN", user, "Permission denied invoking: " + GetSettings.class.getSimpleName() + " " + getJsonParameters());
				c.commit();
				c.close();
				c = null;
				throw new PermissionException(this.getClass().getSimpleName(), user, "Requires an authenticated user.", "");
			}

			PreparedStatement s = c.prepareStatement(
					"select name, value "+
					"from setting " +
					"order by name");
			ResultSet r = s.executeQuery();
			while(r.next()) {
				results.add(new KeyValue(r.getString(1), r.getString(2)));
			}
			r.close();
			s.close();

			c.rollback();
			c.close();
			c = null;
		} catch(SQLException e) {
			throw new IOException(e);
		} finally {
			if(c != null) {
				try { c.rollback(); } catch (SQLException e) { }
				try { c.close(); } catch (SQLException e) { }
			}
		}
		return results;
	}

	@Override
	public String getJsonParameters() {
		return "{" +
				"\"person\":\"" + user.getPersonUuid() + "\"" +
				"}";
	}

}