com.vaadin.flow.server.frontend.

java.lang.Object
- com.vaadin.flow.server.frontend.NodeUpdater

All Implemented Interfaces:

FallibleCommand

Direct Known Subclasses:

TaskGeneratePackageJson, TaskUpdateImports, TaskUpdatePackages
```
public abstract class NodeUpdater
extends Object
implements FallibleCommand
```
Base abstract class for frontend updaters that needs to be run when in dev-mode or from the flow maven plugin.
For internal use only. May be renamed or removed in a future release.

Since:

2.0

Field Summary

Fields
Modifier and Type	Field	Description
`protected String`	`buildDir`
`protected static String`	`DEP_NAME_FLOW_DEPS`
`protected static String`	`DEP_NAME_FLOW_JARS`
`protected File`	`flowResourcesFolder`	Base directory for flow dependencies coming from jars.
`protected FrontendDependenciesScanner`	`frontDeps`	The `FrontendDependencies` object representing the application dependencies.
`static String`	`GENERATED_PREFIX`	Relative paths of generated should be prefixed with this value, so they can be correctly separated from {projectDir}/frontend files.
`protected File`	`generatedFolder`	Base directory for flow generated files.
`protected File`	`nodeModulesFolder`	The path to the `FrontendUtils.NODE_MODULES` directory.
`protected File`	`npmFolder`	Base directory for `Constants.PACKAGE_JSON`, `FrontendUtils.WEBPACK_CONFIG`, `FrontendUtils.NODE_MODULES`.
`protected static String`	`POLYMER_VERSION`

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`NodeUpdater(ClassFinder finder, FrontendDependenciesScanner frontendDependencies, File npmFolder, File generatedPath, File flowResourcesPath, String buildDir, FeatureFlags featureFlags)`	Constructor.

Method Summary

All Methods
Modifier and Type	Method	Description
`protected String`	`generateVersionsJson()`	Generate versions json file for version locking.
`protected File`	`getPackageJsonFile()`
`protected File`	`getPackageLockFile()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.vaadin.flow.server.frontend.FallibleCommand
execute

- Field Detail
  - GENERATED_PREFIX
```
public static final String GENERATED_PREFIX
```
    Relative paths of generated should be prefixed with this value, so they can be correctly separated from {projectDir}/frontend files.
    
    See Also:
    
    Constant Field Values
  - DEP_NAME_FLOW_DEPS
```
protected static final String DEP_NAME_FLOW_DEPS
```
    See Also:
    
    Constant Field Values
  - DEP_NAME_FLOW_JARS
```
protected static final String DEP_NAME_FLOW_JARS
```
    See Also:
    
    Constant Field Values
  - POLYMER_VERSION
```
protected static final String POLYMER_VERSION
```
    See Also:
    
    Constant Field Values
  - npmFolder
```
protected final File npmFolder
```
    Base directory for Constants.PACKAGE_JSON, FrontendUtils.WEBPACK_CONFIG, FrontendUtils.NODE_MODULES.
  - nodeModulesFolder
```
protected final File nodeModulesFolder
```
    The path to the FrontendUtils.NODE_MODULES directory.
  - generatedFolder
```
protected final File generatedFolder
```
    Base directory for flow generated files.
  - flowResourcesFolder
```
protected final File flowResourcesFolder
```
    Base directory for flow dependencies coming from jars.
  - frontDeps
```
protected final FrontendDependenciesScanner frontDeps
```
    The FrontendDependencies object representing the application dependencies.
  - buildDir
```
protected String buildDir
```
- Constructor Detail
  - NodeUpdater
```
protected NodeUpdater(ClassFinder finder,
                      FrontendDependenciesScanner frontendDependencies,
                      File npmFolder,
                      File generatedPath,
                      File flowResourcesPath,
                      String buildDir,
                      FeatureFlags featureFlags)
```
    Constructor.
    
    Parameters:
    
    finder - a reusable class finder
    
    frontendDependencies - a reusable frontend dependencies
    
    npmFolder - folder with the `package.json` file
    
    generatedPath - folder where flow generated files will be placed.
    
    flowResourcesPath - folder where flow dependencies will be copied to.
    
    buildDir - the used build directory
    
    featureFlags - FeatureFlags for this build
- Method Detail
  - getPackageJsonFile
```
protected File getPackageJsonFile()
```
  - getPackageLockFile
```
protected File getPackageLockFile()
```
  - generateVersionsJson
```
protected String generateVersionsJson()
                               throws IOException
```
    Generate versions json file for version locking.
    
    Returns:
    
    generated versions json file path
    
    Throws:
    
    IOException - when file IO fails

com.vaadin.flow.server.frontend.

Class NodeUpdater

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.vaadin.flow.server.frontend.FallibleCommand

Field Detail

GENERATED_PREFIX

DEP_NAME_FLOW_DEPS

DEP_NAME_FLOW_JARS

POLYMER_VERSION

npmFolder

nodeModulesFolder

generatedFolder

flowResourcesFolder

frontDeps

buildDir

Constructor Detail

NodeUpdater

Method Detail

getPackageJsonFile

getPackageLockFile

generateVersionsJson