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252
hrmsEjb/net/sf/jasperreports/engine/fill/JRCalculator.java
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252
hrmsEjb/net/sf/jasperreports/engine/fill/JRCalculator.java
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package net.sf.jasperreports.engine.fill;
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import java.util.Map;
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import net.sf.jasperreports.engine.JRException;
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import net.sf.jasperreports.engine.JRExpression;
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public class JRCalculator implements JRFillExpressionEvaluator {
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protected Map parsm = null;
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protected Map fldsm = null;
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protected Map varsm = null;
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protected JRFillVariable[] variables = null;
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protected JRFillGroup[] groups = null;
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protected JRFillElementDataset[] datasets = null;
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private JRFillVariable pageNumber = null;
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private JRFillVariable columnNumber = null;
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private final JREvaluator evaluator;
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protected JRCalculator(JREvaluator evaluator) {
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this.evaluator = evaluator;
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}
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protected void init(JRFillDataset dataset) throws JRException {
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this.parsm = dataset.parametersMap;
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this.fldsm = dataset.fieldsMap;
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this.varsm = dataset.variablesMap;
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this.variables = dataset.variables;
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this.groups = dataset.groups;
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this.datasets = dataset.elementDatasets;
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this.pageNumber = (JRFillVariable)this.varsm.get("PAGE_NUMBER");
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this.columnNumber = (JRFillVariable)this.varsm.get("COLUMN_NUMBER");
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byte whenResourceMissingType = dataset.getWhenResourceMissingType();
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this.evaluator.init(this.parsm, this.fldsm, this.varsm, whenResourceMissingType);
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}
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public JRFillVariable getPageNumber() {
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return this.pageNumber;
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}
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public JRFillVariable getColumnNumber() {
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return this.columnNumber;
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}
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public void calculateVariables() throws JRException {
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if (this.variables != null && this.variables.length > 0)
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for (int i = 0; i < this.variables.length; i++) {
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JRFillVariable variable = this.variables[i];
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Object expressionValue = evaluate(variable.getExpression());
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Object newValue = variable.getIncrementer().increment(variable, expressionValue, AbstractValueProvider.getCurrentValueProvider());
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variable.setValue(newValue);
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variable.setInitialized(false);
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if (variable.getIncrementType() == 5)
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variable.setIncrementedValue(variable.getValue());
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}
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if (this.datasets != null && this.datasets.length > 0)
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for (int i = 0; i < this.datasets.length; i++) {
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JRFillElementDataset elementDataset = this.datasets[i];
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elementDataset.evaluate(this);
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if (elementDataset.getIncrementType() == 5)
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elementDataset.increment();
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}
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}
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public void estimateVariables() throws JRException {
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if (this.variables != null && this.variables.length > 0) {
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JRFillVariable variable = null;
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Object expressionValue = null;
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Object newValue = null;
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for (int i = 0; i < this.variables.length; i++) {
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variable = this.variables[i];
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expressionValue = evaluateEstimated(variable.getExpression());
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newValue = variable.getIncrementer().increment(variable, expressionValue, AbstractValueProvider.getEstimatedValueProvider());
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variable.setEstimatedValue(newValue);
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}
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}
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}
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public void estimateGroupRuptures() throws JRException {
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JRFillGroup group = null;
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Object oldValue = null;
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Object estimatedValue = null;
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boolean groupHasChanged = false;
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boolean isTopLevelChange = false;
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if (this.groups != null && this.groups.length > 0)
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for (int i = 0; i < this.groups.length; i++) {
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group = this.groups[i];
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isTopLevelChange = false;
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if (!groupHasChanged) {
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oldValue = evaluateOld(group.getExpression());
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estimatedValue = evaluateEstimated(group.getExpression());
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if ((oldValue == null && estimatedValue != null) || (oldValue != null && !oldValue.equals(estimatedValue))) {
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groupHasChanged = true;
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isTopLevelChange = true;
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}
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}
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group.setHasChanged(groupHasChanged);
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group.setTopLevelChange(isTopLevelChange);
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}
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}
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public void initializeVariables(byte resetType) throws JRException {
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if (this.variables != null && this.variables.length > 0)
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for (int i = 0; i < this.variables.length; i++) {
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incrementVariable(this.variables[i], resetType);
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initializeVariable(this.variables[i], resetType);
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}
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if (this.datasets != null && this.datasets.length > 0)
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for (int i = 0; i < this.datasets.length; i++) {
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incrementDataset(this.datasets[i], resetType);
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initializeDataset(this.datasets[i], resetType);
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}
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}
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private void incrementVariable(JRFillVariable variable, byte incrementType) {
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if (variable.getIncrementType() != 5) {
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boolean toIncrement = false;
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switch (incrementType) {
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case 1:
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toIncrement = true;
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break;
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case 2:
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toIncrement = (variable.getIncrementType() == 2 || variable.getIncrementType() == 3);
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break;
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case 3:
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toIncrement = (variable.getIncrementType() == 3);
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break;
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case 4:
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if (variable.getIncrementType() == 4) {
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JRFillGroup group = (JRFillGroup)variable.getIncrementGroup();
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toIncrement = group.hasChanged();
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}
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break;
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}
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if (toIncrement)
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variable.setIncrementedValue(variable.getValue());
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} else {
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variable.setIncrementedValue(variable.getValue());
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}
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}
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private void incrementDataset(JRFillElementDataset elementDataset, byte incrementType) {
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if (elementDataset.getIncrementType() != 5) {
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boolean toIncrement = false;
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switch (incrementType) {
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case 1:
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toIncrement = true;
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break;
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case 2:
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toIncrement = (elementDataset.getIncrementType() == 2 || elementDataset.getIncrementType() == 3);
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break;
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case 3:
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toIncrement = (elementDataset.getIncrementType() == 3);
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break;
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case 4:
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if (elementDataset.getIncrementType() == 4) {
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JRFillGroup group = (JRFillGroup)elementDataset.getIncrementGroup();
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toIncrement = group.hasChanged();
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}
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break;
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}
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if (toIncrement)
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elementDataset.increment();
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}
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}
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private void initializeVariable(JRFillVariable variable, byte resetType) throws JRException {
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if (variable.getResetType() != 5) {
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boolean toInitialize = false;
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switch (resetType) {
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case 1:
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toInitialize = true;
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break;
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case 2:
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toInitialize = (variable.getResetType() == 2 || variable.getResetType() == 3);
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break;
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case 3:
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toInitialize = (variable.getResetType() == 3);
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break;
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case 4:
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if (variable.getResetType() == 4) {
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JRFillGroup group = (JRFillGroup)variable.getResetGroup();
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toInitialize = group.hasChanged();
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}
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break;
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}
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if (toInitialize) {
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variable.setValue(evaluate(variable.getInitialValueExpression()));
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variable.setInitialized(true);
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variable.setIncrementedValue(null);
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}
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} else {
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variable.setValue(evaluate(variable.getExpression()));
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variable.setIncrementedValue(variable.getValue());
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}
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}
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private void initializeDataset(JRFillElementDataset elementDataset, byte resetType) {
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boolean toInitialize = false;
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switch (resetType) {
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case 1:
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toInitialize = true;
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break;
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case 2:
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toInitialize = (elementDataset.getResetType() == 2 || elementDataset.getResetType() == 3);
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break;
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case 3:
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toInitialize = (elementDataset.getResetType() == 3);
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break;
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case 4:
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if (elementDataset.getResetType() == 4) {
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JRFillGroup group = (JRFillGroup)elementDataset.getResetGroup();
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toInitialize = group.hasChanged();
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}
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break;
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}
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if (toInitialize)
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elementDataset.initialize();
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}
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public Object evaluate(JRExpression expression, byte evaluationType) throws JRException {
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Object value = null;
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switch (evaluationType) {
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case 1:
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value = evaluateOld(expression);
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return value;
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case 2:
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value = evaluateEstimated(expression);
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return value;
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}
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value = evaluate(expression);
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return value;
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}
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public Object evaluateOld(JRExpression expression) throws JRExpressionEvalException {
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return this.evaluator.evaluateOld(expression);
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}
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public Object evaluateEstimated(JRExpression expression) throws JRExpressionEvalException {
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return this.evaluator.evaluateEstimated(expression);
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}
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public Object evaluate(JRExpression expression) throws JRExpressionEvalException {
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return this.evaluator.evaluate(expression);
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}
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}
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