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// ============================================================================
//
// %GENERATED_LICENSE%
//
// ============================================================================
package routines;

import java.math.BigDecimal;

public class Numeric {

private static final java.util.Map<String, Integer> seq_Hash = new java.util.HashMap<String, Integer>();

/**
     * return an incremented numeric id
     *
     * {talendTypes} int | Integer
     *
     * {Category} Numeric
     *
     * {param} string("s1") sequence identifier
     *
     * {param} int(1) start value
     *
     * {param} int(1) step
     *
     * {example} sequence("s1", 1, 1) # 1, 2, 3, ...
     *
     * {example} sequence("s2", 100, -2) # 100, 98, 96, ...
     *
     */
    public static Integer sequence(String seqName, int startValue, int step) {
        if (seq_Hash.containsKey(seqName)) {
            seq_Hash.put(seqName, seq_Hash.get(seqName) + step);
            return seq_Hash.get(seqName);
        } else {
            seq_Hash.put(seqName, startValue);
            return startValue;
        }
    }

/**
     * create a sequence if not exists and put a new startValue
     *
     * {Category} Numeric
     *
     * {param} string("s1") sequence identifier
     *
     * {param} int(1) start value
     *
     * {example} sequence("s1", 1)
     *
     */

public static void resetSequence(String seqName, int startValue) {
        seq_Hash.put(seqName, startValue);
    }

/**
     * remove a sequence
     *
     * {Category} Numeric
     *
     * {param} string("s1") sequence identifier
     *
     * {example} sequence("s1")
     *
     */

public static void removeSequence(String seqName) {
        if (seq_Hash.containsKey(seqName)) {
            seq_Hash.remove(seqName);
        }
    }

/**
     * return a random int between min and max
     *
     * {Category} Numeric
     *
     * {talendTypes} int | Integer
     *
     * {param} int(0) min value
     *
     * {param} int(100) max value
     *
     * {example} random(3, 10) # 7, 4, 8, ...
     *
     * {example} random(0, 100) # 93, 12, 83, ...
     *
     */
    public static Integer random(Integer min, Integer max) {
        return ((Long) Math.round(min - 0.5 + (Math.random() * (max - min + 1)))).intValue();
    }

/**
     * return numbers using an implied decimal format.
     *
     * {Category} Numeric
     *
     * {talendTypes} float | Float
     *
     * {param} String("9V99") format: float pointing format.
     *
     * {param} String("123") toConvert: read this value.
     *
     * {example} convertImpliedDecimalFormat("9V99", "123") result: 1.23 ...
     *
     */
    public static Float convertImpliedDecimalFormat(String format, String toConvert) {
        BigDecimal decimal = Numeric.convertString2BigDecimal(format,toConvert);
        return new Float(decimal.doubleValue());
    }

public static BigDecimal convertString2BigDecimal(String format, String toConvert) {
        long decimalPlace = 1;
        int indexOf = format.indexOf('V');
        if (indexOf > -1) {
            boolean isV = false;
            for (int i = 0; i < format.length(); i++) {
                char charAt = format.charAt(i);
                if (charAt == '9' && isV) {
                    decimalPlace = 10 * decimalPlace;
                } else if (charAt == 'V') {
                    isV = true;
                }
            }
        }
        BigDecimal decimal = new BigDecimal(toConvert);
        decimal = decimal.divide(new BigDecimal(decimalPlace));
        return decimal;
    }
}

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