/src/main/java/com/example/plugins/tutorial/jira/customfields/MoneyCustomField.java

package com.example.plugins.tutorial.jira.customfields;

import com.atlassian.jira.issue.customfields.impl.AbstractSingleFieldType;
import com.atlassian.jira.issue.customfields.impl.FieldValidationException;
import com.atlassian.jira.issue.customfields.manager.GenericConfigManager;
import com.atlassian.jira.issue.customfields.persistence.CustomFieldValuePersister;
import com.atlassian.jira.issue.customfields.persistence.PersistenceFieldType;
import com.atlassian.jira.util.NotNull;

import java.math.BigDecimal;

public class MoneyCustomField extends AbstractSingleFieldType<BigDecimal>
{
    public MoneyCustomField(CustomFieldValuePersister customFieldValuePersister, GenericConfigManager genericConfigManager) {
        super(customFieldValuePersister, genericConfigManager);
    }
    @Override
    public String getStringFromSingularObject(final BigDecimal singularObject)
    {
        if (singularObject == null)
            return null;
        else
            return singularObject.toString();
    }

    @Override
    public BigDecimal getSingularObjectFromString(final String string)
            throws FieldValidationException
    {
        if (string == null)
            return null;
        try
        {
            final BigDecimal decimal = new BigDecimal(string);
            // Check that we don't have too many decimal places
            if (decimal.scale() > 2)
            {
                throw new FieldValidationException(
                        "Maximum of 2 decimal places are allowed.");
            }
            return decimal.setScale(2);
        }
        catch (NumberFormatException ex)
        {
            throw new FieldValidationException("Not a valid number.");
        }
    }

    @Override
    protected PersistenceFieldType getDatabaseType()
    {
        return PersistenceFieldType.TYPE_LIMITED_TEXT;
    }

    @Override
    protected BigDecimal getObjectFromDbValue(@NotNull final Object databaseValue)
            throws FieldValidationException
    {
        return getSingularObjectFromString((String) databaseValue);
    }

    @Override
    protected Object getDbValueFromObject(final BigDecimal customFieldObject)
    {
        return getStringFromSingularObject(customFieldObject);
    }



}