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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.engine.fill;
import net.sf.jasperreports.engine.CommonReturnValue;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRVariable;
import net.sf.jasperreports.engine.VariableReturnValue;
import net.sf.jasperreports.engine.type.CalculationEnum;
/**
* Class used to instantiate sub datasets.
*
* @author Lucian Chirita ([email protected])
*/
public abstract class AbstractVariableReturnValueSourceContext implements FillReturnValues.SourceContext
{
public static final String EXCEPTION_MESSAGE_KEY_NUMERIC_TYPE_REQUIRED = "fill.return.values.numeric.type.required";
public static final String EXCEPTION_MESSAGE_KEY_SOURCE_NOT_FOUND = "fill.return.values.source.not.found";
public static final String EXCEPTION_MESSAGE_KEY_VARIABLE_NOT_ASSIGNABLE = "fill.return.values.variable.not.assignable";
@Override
public void check(CommonReturnValue commonReturnValue) throws JRException
{
VariableReturnValue returnValue = (VariableReturnValue)commonReturnValue;
String subreportVariableName = returnValue.getFromVariable();
JRVariable subrepVariable = getFromVariable(subreportVariableName);
if (subrepVariable == null)
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_SOURCE_NOT_FOUND,
new Object[]{subreportVariableName, returnValue.getToVariable()}
);
}
JRVariable variable = getToVariable(returnValue.getToVariable());
if (
returnValue.getCalculation() == CalculationEnum.COUNT
|| returnValue.getCalculation() == CalculationEnum.DISTINCT_COUNT
)
{
if (!Number.class.isAssignableFrom(variable.getValueClass()))
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_NUMERIC_TYPE_REQUIRED,
new Object[]{returnValue.getToVariable()}
);
}
}
else if (!variable.getValueClass().isAssignableFrom(subrepVariable.getValueClass()) &&
!(Number.class.isAssignableFrom(variable.getValueClass()) && Number.class.isAssignableFrom(subrepVariable.getValueClass())))
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_VARIABLE_NOT_ASSIGNABLE,
new Object[]{returnValue.getToVariable(), subreportVariableName}
);
}
}
public abstract JRVariable getFromVariable(String name);
@Override
public abstract JRFillVariable getToVariable(String name);
}