java/sql-dk/src/info/globalcode/sql/dk/configuration/Properties.java
author František Kučera <franta-hg@frantovo.cz>
Tue, 31 Dec 2013 18:11:50 +0100
branchv_0
changeset 105 39d8b427e20f
parent 104 245f1b88a3e6
child 106 e9c3583580c8
permissions -rw-r--r--
cloneable property and properties
franta-hg@104
     1
/**
franta-hg@104
     2
 * SQL-DK
franta-hg@104
     3
 * Copyright © 2013 František Kučera (frantovo.cz)
franta-hg@104
     4
 *
franta-hg@104
     5
 * This program is free software: you can redistribute it and/or modify
franta-hg@104
     6
 * it under the terms of the GNU General Public License as published by
franta-hg@104
     7
 * the Free Software Foundation, either version 3 of the License, or
franta-hg@104
     8
 * (at your option) any later version.
franta-hg@104
     9
 *
franta-hg@104
    10
 * This program is distributed in the hope that it will be useful,
franta-hg@104
    11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
franta-hg@104
    12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
franta-hg@104
    13
 * GNU General Public License for more details.
franta-hg@104
    14
 *
franta-hg@104
    15
 * You should have received a copy of the GNU General Public License
franta-hg@104
    16
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
franta-hg@104
    17
 */
franta-hg@104
    18
package info.globalcode.sql.dk.configuration;
franta-hg@104
    19
franta-hg@104
    20
import java.util.ArrayList;
franta-hg@104
    21
import javax.xml.bind.annotation.XmlTransient;
franta-hg@104
    22
import static info.globalcode.sql.dk.Functions.findByName;
franta-hg@105
    23
import java.util.Collections;
franta-hg@104
    24
franta-hg@104
    25
/**
franta-hg@104
    26
 * <p>List of configurables.</p>
franta-hg@104
    27
 *
franta-hg@104
    28
 * <p>Can be backed by defaults – if value for given name is nof found in this instance, we will
franta-hg@104
    29
 * look
franta-hg@104
    30
 * into defaults. Methods also accept defaultValue parameter – is used if property is nof found even
franta-hg@104
    31
 * in default properties.</p>
franta-hg@104
    32
 *
franta-hg@104
    33
 * <p>Typical use: </p>
franta-hg@104
    34
 * <ul>
franta-hg@104
    35
 * <li>this instance – ad-hoc properties from CLI options</li>
franta-hg@104
    36
 * <li>default properties – from config file</li>
franta-hg@104
    37
 * <li>defaultValue – hardcoded default</li>
franta-hg@104
    38
 * </ul>
franta-hg@104
    39
 *
franta-hg@104
    40
 * @author Ing. František Kučera (frantovo.cz)
franta-hg@104
    41
 */
franta-hg@105
    42
public class Properties extends ArrayList<Property> implements Cloneable {
franta-hg@104
    43
franta-hg@104
    44
	private Properties defaults;
franta-hg@104
    45
franta-hg@105
    46
	public Properties() {
franta-hg@105
    47
	}
franta-hg@105
    48
franta-hg@105
    49
	public Properties(int initialCapacity) {
franta-hg@105
    50
		super(initialCapacity);
franta-hg@105
    51
	}
franta-hg@105
    52
franta-hg@104
    53
	@XmlTransient
franta-hg@104
    54
	public Properties getDefaults() {
franta-hg@104
    55
		return defaults;
franta-hg@104
    56
	}
franta-hg@104
    57
franta-hg@104
    58
	public void setDefaults(Properties defaults) {
franta-hg@104
    59
		this.defaults = defaults;
franta-hg@104
    60
	}
franta-hg@104
    61
franta-hg@104
    62
	private Property findProperty(String name) {
franta-hg@104
    63
		Property p = findByName(this, name);
franta-hg@104
    64
		if (p == null) {
franta-hg@104
    65
			p = findByName(defaults, name);
franta-hg@104
    66
		}
franta-hg@104
    67
		return p;
franta-hg@104
    68
	}
franta-hg@104
    69
franta-hg@104
    70
	public String getString(String name, String defaultValue) {
franta-hg@104
    71
		Property p = findProperty(name);
franta-hg@104
    72
		return p == null ? defaultValue : p.getValue();
franta-hg@104
    73
	}
franta-hg@104
    74
franta-hg@104
    75
	public boolean getBoolean(String name, boolean defaultValue) {
franta-hg@104
    76
		Property p = findProperty(name);
franta-hg@104
    77
		return p == null ? defaultValue : Boolean.valueOf(p.getValue());
franta-hg@104
    78
	}
franta-hg@104
    79
franta-hg@104
    80
	public int getInteger(String name, int defaultValue) {
franta-hg@104
    81
		Property p = findProperty(name);
franta-hg@104
    82
		return p == null ? defaultValue : Integer.valueOf(p.getValue());
franta-hg@104
    83
	}
franta-hg@105
    84
franta-hg@105
    85
	@Override
franta-hg@105
    86
	public Properties clone() {
franta-hg@105
    87
		Properties clone = new Properties(size());
franta-hg@105
    88
		Collections.copy(clone, this);
franta-hg@105
    89
		return clone;
franta-hg@105
    90
	}
franta-hg@104
    91
}