org.pentaho.di.core.injection.NullNumberConverter.java Source code

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Here is the source code for org.pentaho.di.core.injection.NullNumberConverter.java

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/*! ******************************************************************************
 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2018 by Hitachi Vantara : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ******************************************************************************/

package org.pentaho.di.core.injection;

import org.apache.commons.lang.StringUtils;

/**
 * An extension to the {@link DefaultInjectionTypeConverter} that converts null and empty values to -1 for
 * number/int type variables. This ensures that 0's aren't inserted for field values that are meant to remain empty.
 * This assumes that the step dialog knows to treat field values set to -1 as "empty".
 */
public class NullNumberConverter extends DefaultInjectionTypeConverter {

    @Override
    public int string2intPrimitive(final String v) {
        return StringUtils.isBlank(v) ? -1 : Integer.parseInt(v);
    }

    @Override
    public int integer2intPrimitive(final Long v) {
        return v == null ? -1 : v.intValue();
    }

    @Override
    public int number2intPrimitive(final Double v) {
        return v == null ? -1 : Math.round(v.floatValue());
    }
}