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