private JRVariable createHelperVariable(
JRVariable variable, String nameSuffix, byte calculation) {
JRDesignVariable helper = new JRDesignVariable();
helper.setName(variable.getName() + nameSuffix);
helper.setValueClassName(variable.getValueClassName());
helper.setIncrementerFactoryClassName(variable.getIncrementerFactoryClassName());
helper.setResetType(variable.getResetType());
helper.setResetGroup(variable.getResetGroup());
helper.setIncrementType(variable.getIncrementType());
helper.setIncrementGroup(variable.getIncrementGroup());
helper.setCalculation(calculation);
helper.setSystemDefined(true);
helper.setExpression(variable.getExpression());
return helper;
}
private JRVariable createDistinctCountHelperVariable(JRVariable variable) {
JRDesignVariable helper = new JRDesignVariable();
helper.setName(variable.getName() + "_DISTINCT_COUNT");
helper.setValueClassName(variable.getValueClassName());
helper.setIncrementerFactoryClassName(JRDistinctCountIncrementerFactory.class.getName());
helper.setResetType(JRVariable.RESET_TYPE_REPORT);
if (variable.getIncrementType() != JRVariable.RESET_TYPE_NONE)
helper.setResetType(variable.getIncrementType());
helper.setResetGroup(variable.getIncrementGroup());
helper.setCalculation(JRVariable.CALCULATION_NOTHING);
helper.setSystemDefined(true);
helper.setExpression(variable.getExpression());
return helper;
}
private String generateExpression(JRExpression expression, byte evaluationType) {
JRParameter jrParameter = null;
JRField jrField = null;
JRVariable jrVariable = null;
StringBuffer sbuffer = new StringBuffer();
JRExpressionChunk[] chunks = expression.getChunks();
JRExpressionChunk chunk = null;
String chunkText = null;
if (chunks != null && chunks.length > 0) {
for (int i = 0; i < chunks.length; i++) {
chunk = chunks[i];
chunkText = chunk.getText();
if (chunkText == null) {
chunkText = "";
}
switch (chunk.getType()) {
case JRExpressionChunk.TYPE_TEXT:
{
sbuffer.append(chunkText);
break;
}
case JRExpressionChunk.TYPE_PARAMETER:
{
jrParameter = (JRParameter) parametersMap.get(chunkText);
sbuffer.append("((");
sbuffer.append(jrParameter.getValueClassName());
sbuffer.append(")super.parameter_");
sbuffer.append(JRStringUtil.getJavaIdentifier(chunkText));
sbuffer.append(".getValue())");
break;
}
case JRExpressionChunk.TYPE_FIELD:
{
jrField = (JRField) fieldsMap.get(chunkText);
sbuffer.append("((");
sbuffer.append(jrField.getValueClassName());
sbuffer.append(")super.field_");
sbuffer.append(JRStringUtil.getJavaIdentifier(chunkText));
sbuffer.append(".get");
sbuffer.append((String) fieldPrefixMap.get(new Byte(evaluationType)));
sbuffer.append("Value())");
break;
}
case JRExpressionChunk.TYPE_VARIABLE:
{
jrVariable = (JRVariable) variablesMap.get(chunkText);
sbuffer.append("((");
sbuffer.append(jrVariable.getValueClassName());
sbuffer.append(")super.variable_");
sbuffer.append(JRStringUtil.getJavaIdentifier(chunkText));
sbuffer.append(".get");
sbuffer.append((String) variablePrefixMap.get(new Byte(evaluationType)));
sbuffer.append("Value())");
break;
}
case JRExpressionChunk.TYPE_RESOURCE:
{
jrParameter = (JRParameter) parametersMap.get(chunkText);
sbuffer.append("super.evaluator.str(\"");
sbuffer.append(chunkText);
sbuffer.append("\")");
break;
}
}
}
}
if (sbuffer.length() == 0) {
sbuffer.append("null");
}
return sbuffer.toString();
}
