com.javaquery.util.collection.JHashMap Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of util Show documentation
Java util class to reduce boilerplate codes
There is a newer version: 1.2.7
package com.javaquery.util.collection;

import com.javaquery.util.Regex;

import java.util.HashMap;

/**
 * @author vicky.thakor
 * @since 1.2.0
 */
public class JHashMap extends HashMap {

    /**
     * @param key the key whose associated value is to be returned
     * @return the value to which the specified key is mapped, or 0 if this map contains no mapping for the key
     */
    public Integer optInt(K key){
        return optInt(key, 0);
    }

    /**
     * @param key the key whose associated value is to be returned
     * @param defaultValue the default mapping of the key
     * @return the value to which the specified key is mapped, or defaultValue if this map contains no mapping for the key
     */
    @SuppressWarnings("unchecked")
    public Integer optInt(K key, Integer defaultValue){
        Object value = getOrDefault(key, (V) defaultValue);
        if(value instanceof Number){
            return ((Number) value).intValue();
        }
        String strValue = String.valueOf(value);
        return Regex.isNumber(strValue) ? Integer.parseInt(strValue) : defaultValue;
    }

    /**
     * @param key the key whose associated value is to be returned
     * @return the value to which the specified key is mapped, or 0 if this map contains no mapping for the key
     */
    public Long optLong(K key){
        return optLong(key, 0L);
    }

    /**
     * @param key the key whose associated value is to be returned
     * @param defaultValue the default mapping of the key
     * @return the value to which the specified key is mapped, or defaultValue if this map contains no mapping for the key
     */
    @SuppressWarnings("unchecked")
    public Long optLong(K key, Long defaultValue){
        Object value = getOrDefault(key, (V) defaultValue);
        if(value instanceof Number){
            return ((Number) value).longValue();
        }
        String strValue = String.valueOf(value);
        return Regex.isNumber(strValue) ? Long.parseLong(strValue) : defaultValue;
    }

    /**
     * @param key the key whose associated value is to be returned
     * @return the value to which the specified key is mapped, or 0 if this map contains no mapping for the key
     */
    public Double optDouble(K key){
        return optDouble(key, 0D);
    }

    /**
     * @param key the key whose associated value is to be returned
     * @param defaultValue the default mapping of the key
     * @return the value to which the specified key is mapped, or defaultValue if this map contains no mapping for the key
     */
    @SuppressWarnings("unchecked")
    public Double optDouble(K key, Double defaultValue){
        Object value = getOrDefault(key, (V) defaultValue);
        if(value instanceof Number){
            return ((Number) value).doubleValue();
        }
        String strValue = String.valueOf(value);
        return Regex.isNumber(strValue) ? Double.parseDouble(strValue) : defaultValue;
    }
}