org.kawanfw.sql.tomcat.util.LinkedProperties Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of aceql-http Show documentation

AceQL HTTP is a framework of REST like http APIs that allow to access to remote SQL databases over http from any device that supports http. AceQL HTTP is provided with four client SDK: - The AceQL C# Client SDK allows to wrap the HTTP APIs using Microsoft SQL Server like calls in their code, just like they would for a local database. - The AceQL Java Client SDK allows to wrap the HTTP APIs using JDBC calls in their code, just like they would for a local database. - The AceQL Python Client SDK allows SQL calls to be encoded with standard unmodified DB-API 2.0 syntax

There is a newer version: 12.2

Show newest version

/*
 * Copyright (c)2022 KawanSoft S.A.S. All rights reserved.
 * 
 * Use of this software is governed by the Business Source License included
 * in the LICENSE.TXT file in the project's root directory.
 *
 * Change Date: 2026-11-01
 *
 * On the date above, in accordance with the Business Source License, use
 * of this software will be governed by version 2.0 of the Apache License.
 */
package org.kawanfw.sql.tomcat.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Properties;
import java.util.Set;

import org.apache.commons.lang3.StringUtils;

/**
 * 
 * @author Nicolas de Pomereu
 * 
 *         Allows to read a properties with property names ordered on insertion
 *         order passed to constructor. (Just for reading, ordered store is not
 *         supported.)
 */

public class LinkedProperties extends Properties {

    /**
     * Generated serial ID
     */
    private static final long serialVersionUID = 6588861237819163772L;

    /** The ordered set of properties */
    private Set orderedPropNames = new LinkedHashSet();

    /**
     * Constructor
     * 
     * @param orderedPropNames
     *            the ordered properties names
     */
    public LinkedProperties(Set orderedPropNames) {
	this.orderedPropNames = orderedPropNames;
    }

    /**
     * Returns a set of keys in this property list where the key and its
     * corresponding value are strings, including distinct keys in the default
     * property list if a key of the same name has not already been found from
     * the main properties list. Properties whose key or value is not of type
     * String are omitted.
     * 
     * The returned set is not backed by the Properties object. Changes
     * to this Properties are not reflected in the set, or vice versa.
     *
     * @return a set of keys in this property list where the key and its
     *         corresponding value are strings, including the keys in the
     *         default property list.
     * @see java.util.Properties#defaults
     */
    @Override
    public Set stringPropertyNames() {

	Set orderedPropNamesNew = new LinkedHashSet();

	for (Iterator iterator = orderedPropNames.iterator(); iterator
		.hasNext();) {
	    String propertyName = (String) iterator.next();

	    if (super.containsKey(propertyName)) {
		orderedPropNamesNew.add(propertyName);
	    }
	}

	return orderedPropNamesNew;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.util.Properties#propertyNames()
     */
    @Override
    public Enumeration propertyNames() {

	Set orderedPropNamesNew = new LinkedHashSet();

	for (Iterator iterator = orderedPropNames.iterator(); iterator
		.hasNext();) {
	    String propertyName = (String) iterator.next();

	    if (super.containsKey(propertyName)) {
		orderedPropNamesNew.add(propertyName);
	    }
	}

	return Collections.enumeration(orderedPropNamesNew);

    }

    /*
     * (non-Javadoc)
     * 
     * @see java.util.Hashtable#keys()
     */
    @Override
    public synchronized Enumeration