refactor: refactor package protected attributes "grid" and "propertySet" #152
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WalkthroughThis pull request introduces several changes to the project, primarily focusing on dependency management and class modifications. A new dependency for Lombok is added to the Changes
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (24)
src/main/java/com/flowingcode/vaadin/addons/gridexporter/FooterToolbarItem.java (2)
38-38: LGTM: Improved code consistencyThe removal of the
thiskeyword in the assignment of thepositionfield is a good change. It improves code consistency within the class, as it now matches the style used in the two-parameter constructor (line 44). This change doesn't affect the functionality and makes the code slightly more concise.
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1-54: Consider additional improvements for robustness and concisenessWhile the class is well-designed, consider the following suggestions for further improvement:
Use Lombok annotations to reduce boilerplate code. This can make the class more concise and less error-prone. For example, you could use
@Valuefor an immutable class with generated getters.Implement
equals()andhashCode()methods. These are important for proper behavior when used in collections or for comparison. Lombok's@EqualsAndHashCodecould be used for this purpose.Here's an example of how the class could look with Lombok annotations:
import lombok.Value; @Value public class FooterToolbarItem implements Serializable { Component component; FooterToolbarItemPosition position; public FooterToolbarItem(Component component) { this(component, FooterToolbarItemPosition.AFTER_EXPORT_BUTTONS); } }This suggestion maintains the current functionality while reducing the amount of code and potential for errors.
src/test/java/com/flowingcode/vaadin/addons/gridexporter/ConfigurableConcurrentStreamResourceWriter.java (3)
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36-38: Consider initializing theuifield.While
costandtimeoutare initialized with default values, theuifield is left uninitialized. This could potentially lead toNullPointerExceptions ifgetUI()is called beforesetUi(). Consider initializing it withUI.getCurrent()or documenting that it must be set before use.
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58-65: RenamesetUimethod tosetUIfor consistency.The
getUImethod correctly overrides the parent class method. However, the setter methodsetUidoes not follow the Java naming convention for setters when the property name is an acronym.As per our coding guidelines:
The setter method for a field should follow Java naming conventions, starting with
setfollowed by the field name with the first letter capitalized, unless the field name is an acronym or abbreviation.Please rename
setUitosetUIto maintain consistency with the getter method and follow Java conventions for acronyms.Apply this change:
- public void setUi(UI ui) { + public void setUI(UI ui) { this.ui = ui; }
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1-67: Overall assessment: Well-structured class with minor improvements needed.The
ConfigurableConcurrentStreamResourceWriterclass is well-designed and implements the configurable aspects as intended. It correctly extendsConcurrentStreamResourceWriterand provides the necessary methods to customize its behavior.Key points:
- The class structure and most method implementations are correct.
- Consider initializing the
uifield to prevent potentialNullPointerExceptions.- Rename
setUitosetUIto follow Java naming conventions for acronyms.After addressing these minor issues, the class will be fully compliant with best practices and coding standards.
src/test/java/com/flowingcode/vaadin/addons/gridexporter/VaadinServiceInitListenerImpl.java (3)
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30-32: Consider making the concurrent download limit configurable.The current implementation sets a fixed concurrent download limit of 10. While this might be suitable for many scenarios, consider making this value configurable, perhaps through a system property or configuration file. This would allow for easier adjustment based on server capabilities or specific deployment requirements.
Would you like assistance in implementing a configurable concurrent download limit?
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34-40: Improve timeout handling and error message.
The current timeout of 5 seconds might be too short for some operations. Consider making this value configurable to accommodate different network conditions or file sizes.
The error message "System is busy. Please try again later." is generic. Consider providing more specific information, such as the current number of concurrent downloads or an estimated wait time.
Here's a suggested improvement:
// Read timeout from configuration long timeoutSeconds = ConfigurationManager.getConcurrentDownloadTimeoutSeconds(); GridExporterConcurrentSettings.setConcurrentDownloadTimeout(timeoutSeconds, TimeUnit.SECONDS); GridExporterConcurrentSettings.addGlobalConcurrentDownloadTimeoutEvent(ev -> { int currentDownloads = GridExporterConcurrentSettings.getCurrentDownloads(); Notification.show("Download limit reached. Current downloads: " + currentDownloads + ". Please try again in a few minutes.") .addThemeVariants(NotificationVariant.LUMO_ERROR); });This assumes the existence of a
ConfigurationManagerclass and agetCurrentDownloads()method. If these don't exist, would you like assistance in implementing them?
Consider Making
failOnUiChangeConfigurableCurrently,
failOnUiChangeis consistently set totruein the production code, ensuring strict consistency during export operations. However, allowing this setting to be configurable could provide flexibility for different scenarios without compromising stability.
- Recommendation:
- Make the
failOnUiChangesetting configurable to accommodate varying requirements.🔗 Analysis chain
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42-42: Reconsider setting failOnUiChange to true.Setting
failOnUiChangeto true might be too restrictive in some scenarios. This setting causes the export operation to fail if there are any UI changes during the export process, which could lead to a poor user experience if the UI updates frequently or if the export takes a long time.Consider the following options:
- Make this setting configurable.
- Implement a more graceful handling of UI changes during export.
- Provide clear documentation on the implications of this setting.
To better understand the impact of this setting, let's check its usage across the codebase:
Based on the results of this search, we can provide more targeted advice on how to handle this setting.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for usages of failOnUiChange rg "failOnUiChange" --type javaLength of output: 1149
Script:
#!/bin/bash # Find where setFailOnUiChange is called with true or false rg 'setFailOnUiChange\s*\(\s*(true|false)\s*\)' --type javaLength of output: 512
src/main/java/com/flowingcode/vaadin/addons/gridexporter/ConcurrentDownloadTimeoutEvent.java (2)
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25-37: LGTM: Class documentation and declaration are well-structured.The class is well-documented, clearly explaining its purpose and relationships. The extension of
EventObjectis appropriate for this type of class.Consider adding
@sincetag in the class documentation to indicate in which version of the library this class was introduced. This can help users and developers track API changes over time.
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57-73: LGTM: Propagation control methods are implemented correctly.The
stopPropagation()andisPropagationStopped()methods provide a simple and effective way to control event propagation.Consider making the
propagationStoppedfield volatile or using an AtomicBoolean for better thread safety, especially if this event might be accessed concurrently:- private boolean propagationStopped; + private volatile boolean propagationStopped;or
+ import java.util.concurrent.atomic.AtomicBoolean; - private boolean propagationStopped; + private final AtomicBoolean propagationStopped = new AtomicBoolean(false); public void stopPropagation() { - propagationStopped = true; + propagationStopped.set(true); } public boolean isPropagationStopped() { - return propagationStopped; + return propagationStopped.get(); }This change would ensure that updates to the
propagationStoppedflag are visible across threads, which could be important in a concurrent environment.src/main/java/com/flowingcode/vaadin/addons/gridexporter/CsvStreamResourceWriter.java (2)
93-95: LGTM: Added safeguard for empty columns.The addition of a check for empty columns is a good safeguard. It prevents processing a grid without columns and provides a clear error message. This change improves the robustness of the code.
Consider moving this check to the beginning of the
acceptmethod to fail fast and avoid unnecessary processing.
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77-86: Consider enhancing resource management.While the current implementation correctly uses try-with-resources for CSVWriter and OutputStreamWriter, the OutputStream (parameter
out) is not managed within this block. Consider wrapping the entire operation in a try-with-resources block that includes the OutputStream to ensure proper resource cleanup.Example:
try ( OutputStream bufferedOut = new BufferedOutputStream(out); OutputStreamWriter osw = new OutputStreamWriter(bufferedOut, exporter.getCsvCharset()); CSVWriter writer = new CSVWriter(osw) ) { // Existing code here }This approach would provide more robust resource management.
src/main/java/com/flowingcode/vaadin/addons/gridexporter/BaseStreamResourceWriter.java (2)
145-146: LGTM: Improved readability with local variableThe introduction of a local
gridvariable improves readability and reduces repeated method calls. This change is consistent with the encapsulation improvements made earlier.Consider making the variable final for added safety:
final Grid<T> grid = exporter.getGrid();
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1-233: Overall assessment: Improved encapsulation and readabilityThe changes in this file consistently enhance encapsulation by replacing direct access to the
gridfield with calls togetGrid(). The introduction of a localgridvariable improves readability and reduces repeated method calls. These modifications adhere to object-oriented principles and make the code more maintainable.Consider applying similar refactoring to other classes that may be directly accessing the
gridfield of theGridExporterclass to maintain consistency across the codebase.pom.xml (1)
116-121: LGTM: Lombok dependency added correctly.The addition of Lombok (version 1.18.34) with the "provided" scope is correct and can help reduce boilerplate code in the project. However, please consider the following:
- Ensure all team members have Lombok plugin installed in their IDEs for proper code navigation and compilation.
- Update your build server configuration if necessary to support Lombok annotation processing.
- Consider creating or updating coding guidelines to standardize Lombok usage across the project.
- Be aware that extensive use of Lombok can sometimes make debugging more challenging.
src/main/java/com/flowingcode/vaadin/addons/gridexporter/ExcelStreamResourceWriter.java (1)
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444-446: Approved: Enhanced alignment configuration for headers and footers.The addition of the
ExcelCellTypeparameter toconfigureAlignmentallows for more flexible styling of headers and footers. This is a good improvement.Consider improving readability slightly by using an if-else statement instead of the ternary operator. For example:
-configureAlignment(headerOrFooter.getRight(), cell, isHeader?ExcelCellType.HEADER:ExcelCellType.FOOTER); +ExcelCellType cellType = isHeader ? ExcelCellType.HEADER : ExcelCellType.FOOTER; +configureAlignment(headerOrFooter.getRight(), cell, cellType);This change makes the code a bit more verbose but potentially easier to read and maintain.
src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java (1)
230-232: Consider thread-safety forpropertySetinitializationThe lazy initialization of
propertySetis a good performance optimization. However, in a multi-threaded environment, this could potentially lead to race conditions. Consider using a thread-safe lazy initialization pattern, such as the double-checked locking idiom or an initialization-on-demand holder idiom.Example using double-checked locking:
private volatile PropertySet<T> propertySet; private PropertySet<T> getPropertySet(T item) { PropertySet<T> result = propertySet; if (result == null) { synchronized(this) { result = propertySet; if (result == null) { propertySet = result = (PropertySet<T>) BeanPropertySet.get(item.getClass()); } } } return result; }Then, replace the current initialization with:
if (getPropertySet(item).getProperty(column.getKey()).isPresent()) { // ... existing code ... }This ensures thread-safety while maintaining the performance benefits of lazy initialization.
src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporterConcurrentSettings.java (4)
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38-38: DeclareconcurrentDownloadTimeoutNanosasvolatilefor thread safetyThe static variable
concurrentDownloadTimeoutNanosis accessed by multiple threads without synchronization. Declaring it asvolatileensures that updates are immediately visible to all threads, preventing potential visibility issues in a multithreaded environment.Apply this diff to declare the variable as
volatile:-private static long concurrentDownloadTimeoutNanos = 0L; +private static volatile long concurrentDownloadTimeoutNanos = 0L;
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63-68: Add null check for theunitparameter insetConcurrentDownloadTimeoutThe method
setConcurrentDownloadTimeout(long timeout, TimeUnit unit)does not validate if theunitparameter isnull. Passing anullvalue will result in aNullPointerExceptionwhen callingunit.toNanos(timeout). To enhance robustness, add a null check or document thatunitmust not benull.Apply this diff to add a null check:
public static void setConcurrentDownloadTimeout(long timeout, TimeUnit unit) { + if (unit == null) { + throw new NullPointerException("TimeUnit must not be null"); + } concurrentDownloadTimeoutNanos = unit.toNanos(timeout); }Alternatively, you can use
Objects.requireNonNull(unit, "TimeUnit must not be null");and importjava.util.Objects.
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71-74: Add null check for theunitparameter ingetConcurrentDownloadTimeoutSimilar to the previous method,
getConcurrentDownloadTimeout(TimeUnit unit)does not check ifunitisnull. This can lead to aNullPointerExceptionwhen callingunit.convert(...). Consider adding a null check to prevent unexpected exceptions.Apply this diff to add a null check:
public static long getConcurrentDownloadTimeout(TimeUnit unit) { + if (unit == null) { + throw new NullPointerException("TimeUnit must not be null"); + } return unit.convert(concurrentDownloadTimeoutNanos, TimeUnit.NANOSECONDS); }Or use
Objects.requireNonNull(unit, "TimeUnit must not be null");.
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26-26: Make the classfinaland add a private constructor to prevent instantiationAs
GridExporterConcurrentSettingscontains only static methods and fields, it's standard practice to make the classfinaland include a private constructor to prevent instantiation.Apply this diff to enforce non-instantiability:
+ /** Private constructor to prevent instantiation */ + private GridExporterConcurrentSettings() { + throw new UnsupportedOperationException("Utility class"); + } -public class GridExporterConcurrentSettings { +public final class GridExporterConcurrentSettings {src/main/java/com/flowingcode/vaadin/addons/gridexporter/ConcurrentStreamResourceWriter.java (3)
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142-147: Correct the Javadoc forgetTimeout()methodThe Javadoc should use "Returns" instead of "Sets" since this is a getter method.
Apply this diff to correct the Javadoc:
- * Sets the timeout for acquiring a permit to start a download when there are not enough permits + * Returns the timeout for acquiring a permit to start a download when there are not enough permits * available in the semaphore.
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225-228: Use a more appropriate exception when UI is detachedThrowing an
IOExceptionwhen the UI is detached might be misleading, as this is not an I/O error. Consider throwing anIllegalStateExceptionor a custom exception to more accurately represent the error condition.Apply this diff to change the exception:
- throw new IOException("Detached UI"); + throw new IllegalStateException("Detached UI");
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228-229: Fix the typo in the commentThere's a minor typo in the comment: "acquirig" should be "acquiring".
Apply this diff to fix the typo:
- // The UI has changed or was detached after acquirig the semaphore + // The UI has changed or was detached after acquiring the semaphore
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (16)
- pom.xml (1 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/BaseStreamResourceWriter.java (3 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/ConcurrentDownloadTimeoutEvent.java (1 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/ConcurrentStreamResourceWriter.java (2 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/CsvStreamResourceWriter.java (3 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/DocxStreamResourceWriter.java (7 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/ExcelStreamResourceWriter.java (7 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/FooterToolbar.java (3 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/FooterToolbarItem.java (1 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java (4 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporterConcurrentSettings.java (1 hunks)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/PdfStreamResourceWriter.java (1 hunks)
- src/test/java/com/flowingcode/vaadin/addons/gridexporter/ConfigurableConcurrentStreamResourceWriter.java (1 hunks)
- src/test/java/com/flowingcode/vaadin/addons/gridexporter/FakerInstance.java (1 hunks)
- src/test/java/com/flowingcode/vaadin/addons/gridexporter/VaadinServiceInitListenerImpl.java (1 hunks)
- src/test/java/com/flowingcode/vaadin/addons/gridexporter/test/ConcurrentExportTests.java (2 hunks)
✅ Files skipped from review due to trivial changes (3)
- src/main/java/com/flowingcode/vaadin/addons/gridexporter/FooterToolbar.java
- src/test/java/com/flowingcode/vaadin/addons/gridexporter/FakerInstance.java
- src/test/java/com/flowingcode/vaadin/addons/gridexporter/test/ConcurrentExportTests.java
🧰 Additional context used
📓 Learnings (3)
src/main/java/com/flowingcode/vaadin/addons/gridexporter/CsvStreamResourceWriter.java (3)
Learnt from: javier-godoy PR: FlowingCode/GridExporterAddon#119 File: src/main/java/com/flowingcode/vaadin/addons/gridexporter/CsvStreamResourceWriter.java:77-93 Timestamp: 2024-10-08T21:28:24.972Z Learning: User javier-godoy requested to open a follow-up GitHub issue to discuss resource management in the refactored code of CsvStreamResourceWriter, highlighting the absence of try-with-resources in the previous implementation.Learnt from: javier-godoy PR: FlowingCode/GridExporterAddon#143 File: src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java:315-315 Timestamp: 2024-10-08T21:28:24.972Z Learning: In the `GridExporter` class, CSV exports are not subject to concurrent controls, so `getCsvStreamResource` returns a `StreamResource` instead of a `GridExporterStreamResource`.Learnt from: javier-godoy PR: FlowingCode/GridExporterAddon#143 File: src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java:315-315 Timestamp: 2024-09-26T18:26:03.345Z Learning: In the `GridExporter` class, CSV exports are not subject to concurrent controls, so `getCsvStreamResource` returns a `StreamResource` instead of a `GridExporterStreamResource`.src/main/java/com/flowingcode/vaadin/addons/gridexporter/ExcelStreamResourceWriter.java (1)
Learnt from: javier-godoy PR: FlowingCode/GridExporterAddon#119 File: src/main/java/com/flowingcode/vaadin/addons/gridexporter/CsvStreamResourceWriter.java:77-93 Timestamp: 2024-10-08T21:28:24.972Z Learning: User javier-godoy requested to open a follow-up GitHub issue to discuss resource management in the refactored code of CsvStreamResourceWriter, highlighting the absence of try-with-resources in the previous implementation.src/test/java/com/flowingcode/vaadin/addons/gridexporter/ConfigurableConcurrentStreamResourceWriter.java (2)
Learnt from: javier-godoy PR: FlowingCode/GridExporterAddon#128 File: src/test/java/com/flowingcode/vaadin/addons/gridexporter/ConfigurableConcurrentStreamResourceWriter.java:42-44 Timestamp: 2024-06-11T12:43:23.659Z Learning: The setter method for a field should follow Java naming conventions, starting with `set` followed by the field name with the first letter capitalized, unless the field name is an acronym or abbreviation.Learnt from: javier-godoy PR: FlowingCode/GridExporterAddon#128 File: src/test/java/com/flowingcode/vaadin/addons/gridexporter/ConfigurableConcurrentStreamResourceWriter.java:42-44 Timestamp: 2024-10-08T21:28:24.972Z Learning: The setter method for a field should follow Java naming conventions, starting with `set` followed by the field name with the first letter capitalized, unless the field name is an acronym or abbreviation.
🔇 Additional comments (30)
src/test/java/com/flowingcode/vaadin/addons/gridexporter/ConfigurableConcurrentStreamResourceWriter.java (3)
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28-34: LGTM: Class declaration and constructor are well-defined.The abstract class is correctly defined, extending
ConcurrentStreamResourceWriter. The constructor properly calls the superclass constructor with the delegate parameter.
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40-47: LGTM: Cost getter and setter are well-implemented.The
getCostmethod correctly overrides the parent class method and returns thecostfield. ThesetCostmethod follows Java naming conventions and properly sets thecostfield.
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49-56: LGTM: Timeout getter and setter are well-implemented.The
getTimeoutmethod correctly overrides the parent class method and returns thetimeoutfield. ThesetTimeoutmethod follows Java naming conventions and properly sets thetimeoutfield.src/test/java/com/flowingcode/vaadin/addons/gridexporter/VaadinServiceInitListenerImpl.java (2)
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1-26: LGTM: Package declaration and imports are correct.The package declaration and imports are appropriate for the functionality implemented in this class.
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28-28: LGTM: Class declaration is appropriate.The class
VaadinServiceInitListenerImplcorrectly implements theVaadinServiceInitListenerinterface, which is suitable for initializing Vaadin services.src/main/java/com/flowingcode/vaadin/addons/gridexporter/PdfStreamResourceWriter.java (1)
54-55: Approved: Code simplification and improved readabilityThe changes in the
acceptmethod are well-executed:
- Directly assigning the result of
WordprocessingMLPackage.load()towordMLPackagesimplifies the code by removing unnecessary variable assignments.- Adjusting the indentation of the
Docx4J.toPDF()call improves code readability by aligning it with the previous statements.These modifications enhance code clarity and maintainability without altering the underlying functionality.
Also applies to: 57-57
src/main/java/com/flowingcode/vaadin/addons/gridexporter/ConcurrentDownloadTimeoutEvent.java (2)
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1-23: LGTM: File header and package declaration are correct.The file includes the appropriate Apache License 2.0 header, and the package is correctly declared. Necessary imports are present.
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39-55: LGTM: Constructor and getSource() method are well-implemented.The constructor correctly uses
Objects.requireNonNull()to ensure the source is not null. ThegetSource()method is properly overridden to return the correct type (GridExporter<?>).src/main/java/com/flowingcode/vaadin/addons/gridexporter/CsvStreamResourceWriter.java (4)
24-24: LGTM: Import statements updated appropriately.The import changes reflect the shift towards direct usage of Grid methods and the removal of unused PropertySet-related imports. This aligns well with the refactoring objectives.
58-71: LGTM: Improved encapsulation in the accept method.The changes effectively refactor the usage of the
gridattribute, now accessing it throughexporter.getGrid(). This improves encapsulation and aligns with the PR objectives. The logic remains intact while consistently using the localgridvariable.
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1-114: Confirmed: No concurrent controls needed for CSV exports.The absence of concurrent controls in this implementation is correct. As per the learning from PR #143, CSV exports are not subject to concurrent controls, and
getCsvStreamResourcereturns aStreamResourceinstead of aGridExporterStreamResource. This implementation aligns with that design decision.
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1-114: Summary: Successful refactoring with minor improvement opportunities.The changes in this file successfully refactor the package protected attributes, improving encapsulation and code clarity. The modifications align well with the PR objectives. While the core functionality remains intact, there are opportunities for minor improvements:
- Consider moving the empty columns check to the beginning of the
acceptmethod for faster failure.- Enhance resource management by including the OutputStream in the try-with-resources block.
Overall, this is a solid refactoring effort that achieves its goals while maintaining the existing functionality.
src/main/java/com/flowingcode/vaadin/addons/gridexporter/BaseStreamResourceWriter.java (4)
85-85: LGTM: Improved encapsulationThe change from
exporter.gridtoexporter.getGrid()enhances encapsulation and adheres to object-oriented principles. This modification allows for better control over theGridinstance access and potential future modifications in theGridExporterclass.
90-90: LGTM: Consistent use of getter methodThe change from
exporter.gridtoexporter.getGrid()is consistent with the previous modification and maintains the improved encapsulation throughout the class.
151-151: LGTM: Consistent use of local grid variableThe changes in these lines consistently use the newly introduced
gridlocal variable. This improves readability and maintains the encapsulation improvements throughout the method.Also applies to: 159-162, 169-171
186-188: LGTM: Improved code clarity with bracesThe addition of braces to the if statement improves code clarity and reduces the risk of errors when modifying the code in the future. It's a good practice to always use braces for if statements, even for single-line bodies.
src/main/java/com/flowingcode/vaadin/addons/gridexporter/DocxStreamResourceWriter.java (7)
23-23: LGTM: Import statement added for direct Grid usage.The addition of the
Gridimport aligns with the refactoring objectives and supports improved encapsulation.
81-85: Excellent: Improved encapsulation in Grid access.The changes in the
createDocmethod enhance encapsulation by usingexporter.getGrid()instead of directly accessingexporter.grid. This modification aligns with good object-oriented practices while maintaining the existing functionality.
131-141: Good: Consistent use of grid variable.The changes in the
fillDatamethod call and surrounding code consistently use thegridvariable, improving code clarity and maintaining the refactoring pattern established earlier.
186-188: Good: Improved error handling and cell creation logic.The changes in the
buildRowmethod offer two improvements:
- Moving the empty columns check to the beginning of the method implements a "fail-fast" approach, which is a good practice.
- The modified cell creation logic now only creates a new cell if the current cell is null, potentially fixing a bug or improving efficiency.
These changes enhance the robustness and performance of the method.
Also applies to: 201-203
229-229: Good: Simplified value conversion in buildCell method.The changes in the
buildCellmethod remove redundant casts for Boolean and Double types, instead using simple string concatenation. This improves code readability while maintaining the existing functionality.Also applies to: 234-234
353-358: Good: Improved string comparison in findCellWithPlaceHolder method.The changes in the
findCellWithPlaceHoldermethod now useequals()for string comparison instead of==. This is a safer approach for string comparison as it compares the content of the strings rather than their object references. This change improves the robustness of the code and reduces the risk of subtle bugs related to string comparison.
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1-372: Overall: Excellent refactoring to improve encapsulation and code quality.This pull request successfully achieves its objective of refactoring package protected attributes, particularly focusing on the
gridattribute. The changes consistently improve encapsulation by accessing theGridinstance through a getter method instead of direct access. Additionally, several other improvements have been made:
- Enhanced code clarity and consistency throughout the file.
- Improved error handling with a "fail-fast" approach in the
buildRowmethod.- Optimized cell creation logic, potentially improving performance.
- Simplified value conversion in the
buildCellmethod.- More robust string comparison in the
findCellWithPlaceHoldermethod.These changes collectively contribute to better maintainability, readability, and robustness of the code without altering the core functionality. Great job on this refactoring effort!
src/main/java/com/flowingcode/vaadin/addons/gridexporter/ExcelStreamResourceWriter.java (5)
23-29: LGTM: Import statements updated appropriately.The new import statements reflect the refactoring changes in the class, particularly the tighter integration with Vaadin components. This change appears necessary and aligns with the modifications made to the class implementation.
85-86: Approved: Improved encapsulation increateWorkbookmethod.The refactoring to use
exporter.getGrid()instead of directly accessingexporter.gridenhances encapsulation. This change is consistently applied throughout the method, maintaining the existing functionality while improving the code structure.Also applies to: 98-98
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1-448: Overall: Good refactoring with minor suggestions for improvement.The changes in this file generally improve code quality through better encapsulation, more robust error handling, and more flexible styling options for headers and footers. The refactoring to use
exporter.getGrid()enhances encapsulation, the new error check for empty grids adds a defensive programming measure, and the changes to header and footer handling provide more flexibility.A few minor suggestions and requests for clarification have been made:
- Verify the impact of the new empty grid check on existing use cases.
- Provide more context on the necessity of clearing styles for footer columns.
- Consider a minor readability improvement in the
configureAlignmentmethod call.These changes contribute positively to the maintainability and robustness of the
ExcelStreamResourceWriterclass.
239-241: Approved: Added error check for empty grid columns.The new check prevents issues when working with an empty grid by throwing an
IllegalStateException. This is a good defensive programming practice.Please verify that this change doesn't negatively impact any existing use cases where empty grids might have been silently handled before. Run the following script to check for potential impacts:
#!/bin/bash # Description: Check for potential impacts of the new empty grid check # Test: Search for calls to buildRow or createWorkbook methods rg --type java "buildRow|createWorkbook" --glob "!ExcelStreamResourceWriter.java" # Test: Search for tests that might be affected by this change rg --type java "test.*ExcelStreamResourceWriter" --glob "*Test.java"
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426-429: Approved: Added style clearing for footer columns.The addition of style clearing before processing footer columns is a good change that likely prevents unintended style inheritance or conflicts.
Could you provide more context on why this change was necessary? Was there a specific issue that this addresses? This information would be helpful for future maintenance. Also, please run the following script to check for any related issues or discussions:
✅ Verification successful
Approved: Added style clearing for footer columns.
The addition of style clearing before processing footer columns is a good change that likely prevents unintended style inheritance or conflicts.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Search for related issues or discussions about footer styling # Test: Search for mentions of footer styling issues in commit messages git log -S "footer" -S "style" --pretty=format:'%h %s' --name-only # Test: Search for related discussions in issues or pull requests gh issue list --search "footer style" gh pr list --search "footer style"Length of output: 671
src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java (2)
63-63: LGTM: Lombok @Getter import addedThe addition of the Lombok
@Getterimport is a good practice. It will help reduce boilerplate code by automatically generating getter methods for annotated fields.
105-106: Improved encapsulation forgridandpropertySetThe changes to
gridandpropertySetvariables enhance encapsulation:
gridis now private with a@Getterannotation, which automatically generates a getter method.propertySetis changed to private, restricting direct access from outside the class.These modifications align with good object-oriented design principles by hiding internal state and providing controlled access.
Also applies to: 114-114
Summary by CodeRabbit
New Features
ConcurrentDownloadTimeoutEvent,ConcurrentStreamResourceWriter, andGridExporterConcurrentSettings.ConfigurableConcurrentStreamResourceWriter.Improvements
GridExporterby updating variable visibility.Bug Fixes
PdfStreamResourceWriterandFooterToolbar.