Project containing Mustache-templates used by openapi-generator-maven-plugin to generate Java Records from OpenAPI Specifications.
This project contains the mustache templates.
Starting with project version 2.0.0, the project is licensed under the Apache License 2.0.
Prior to version 2.0.0, the project was licensed under the MIT License. See License.
If you want to sponsor the project, you can do so by sharing the project with others - or head over to GitHub Sponsors - @Chrimle!
The mustache templates can be acquired through multiple ways.
- Maven Central Repository
- GitHub Packages
- Downloading them manually from GitHub
<dependency>
<groupId>io.github.chrimle</groupId>
<artifactId>openapi-to-java-records-mustache-templates</artifactId>
<version>2.2.0</version>
</dependency>Place the file(s) in desired directory. Then, in the Maven build configuration, set the property <templateDirectory> to the directory path. Example:
<build>
<plugins>
<plugin>
<groupId>org.openapitools</groupId>
<artifactId>openapi-generator-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>generate</goal>
</goals>
<configuration>
<inputSpec><!-- Relative directory path to the openapi.yaml file --></inputSpec>
<templateDirectory><!-- Relative directory path to the mustache templates --></templateDirectory>
<output><!-- Relative directory path to where generated classes should be placed --></output>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>The generated classes are customizable by using <configuration>-properties.
In this example, each generated class field will be annotated with Jakarta Bean Validation annotations.
<configuration>
<!-- ... more configurations ... -->
<configOptions>
<useBeanValidation>true</useBeanValidation>
<!-- ... more configOptions ... -->
</configOptions>
</configuration>components:
schemas:
Name:
description: Name Information
type: object
required:
- firstName
- lastName
properties:
firstName:
description: First Name
type: string
minLength: 2
lastName:
description: Last Name
type: string
minLength: 2
middleName:
description: Middle Name
type: string
nullable: true
Person:
description: Personal information
deprecated: true
type: object
required:
- name
- age
- gender
- height
- ssn
- aliases
- email
- trackingCode
properties:
name:
description: Name
type: object
$ref: '#/components/schemas/Name'
age:
description: Age (years)
type: integer
minimum: 0
maximum: 100
gender:
description: Gender
type: string
enum:
- Male
- Female
height:
description: Height (m)
type: number
pattern: float
minimum: 0
legalGuardian:
description: Legal Guardian
type: object
$ref: '#/components/schemas/Person'
ssn:
description: Social Security Number
type: string
pattern: '^\d{3}-\d{2}-\d{4}$'
aliases:
description: Known Aliases
type: array
uniqueItems: true
minItems: 1
maxItems: 3
items:
type: string
telephoneNumber:
description: Telephone Number
type: string
nullable: true
email:
description: Email Address
type: string
format: email
trackingCode:
description: Tracking code for Web analytics
type: string
minLength: 5
maxLength: 50
default: "utm_source=default"Compile the project, for example via:
mvn compileTip
Further information about how to generate models can be found on openapi-generator-maven-plugin.
Unless the configuration property <output> has been set, the generated classes should be found under ./target/generated-sources/openapi.
package io.github.chrimle.example;
import ...;
/**
* Personal information
*
* @deprecated
* @param name Name
* @param age Age (years)
* @param gender Gender
* @param height Height (m)
* @param legalGuardian Person
* @param ssn Social Security Number
* @param aliases Known Aliases
* @param telephoneNumber Telephone Number
* @param email Email Address
* @param trackingCode Tracking code for Web analytics
*/
@Deprecated
public record Person(
@javax.annotation.Nonnull @Valid @NotNull Name name,
@javax.annotation.Nonnull @NotNull @Min(0) @Max(100) Integer age,
@javax.annotation.Nonnull @NotNull GenderEnum gender,
@javax.annotation.Nonnull @NotNull @DecimalMin("0") BigDecimal height,
@javax.annotation.Nonnull @Valid Person legalGuardian,
@javax.annotation.Nonnull @NotNull @Pattern(regexp = "^\\d{3}-\\d{2}-\\d{4}$") String ssn,
@javax.annotation.Nonnull @NotNull @Size(min = 1, max = 3) Set<String> aliases,
@javax.annotation.Nullable String telephoneNumber,
@javax.annotation.Nonnull @NotNull @Email String email,
@javax.annotation.Nonnull @NotNull @Size(min = 5, max = 50) String trackingCode) {
public Person(
@javax.annotation.Nonnull final Name name,
@javax.annotation.Nonnull final Integer age,
@javax.annotation.Nonnull final GenderEnum gender,
@javax.annotation.Nonnull final BigDecimal height,
@javax.annotation.Nonnull final Person legalGuardian,
@javax.annotation.Nonnull final String ssn,
@javax.annotation.Nullable final Set<String> aliases,
@javax.annotation.Nullable final String telephoneNumber,
@javax.annotation.Nonnull final String email,
@javax.annotation.Nullable final String trackingCode) {
this.name = name;
this.age = age;
this.gender = gender;
this.height = height;
this.legalGuardian = legalGuardian;
this.ssn = ssn;
this.aliases = Objects.requireNonNullElse(aliases, new LinkedHashSet<>());
this.telephoneNumber = telephoneNumber;
this.email = email;
this.trackingCode = Objects.requireNonNullElse(trackingCode, "utm_source=default");
}
/**
* Gender
*/
public enum GenderEnum {
MALE("Male"),
FEMALE("Female");
private final String value;
GenderEnum(final String value) {
this.value = value;
}
/**
* Gets the {@code value} of this enum.
*
* @return value of this enum
*/
public String getValue() {
return value;
}
/**
* Case-sensitively parses the given string to an enum constant whose {@link #getValue()}
* matches the provided value.
*
* @param value of the Enum
* @return a {@link GenderEnum } with the matching value
* @throws IllegalArgumentException if no enum has a value matching the given value
*/
public static GenderEnum fromValue(final String value) {
for (final GenderEnum constant : GenderEnum.values()) {
if (constant.getValue().equals(value)) {
return constant;
}
}
throw new IllegalArgumentException("Unexpected value '" + value + "'");
}
}
}All supported plugin <configuration>-options and OpenAPI Specification-properties have been tested.
For reference:
- OpenAPI Specification, used for all tests
- Maven plugin executions, for each different set of configurations
- Generated classes grouped by plugin-execution.
Double-check that build-configurations and the OpenAPI Specification is supported. If problems persist, check the open issues. If the problem you are facing is not already reported, please open an issue with details and instructions to reproduce.
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