pro.fessional.nevermore

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Somewhat Useful Java Annotation Processor

How to use

<dependencies>
    <dependency>
        <groupId>pro.fessional</groupId>
        <artifactId>nevermore</artifactId>
        <version>${nevermore.version}</version>
    </dependency>
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <parameters>true</parameters>
                <annotationProcessorPaths>
                    <!--  at last -->
                    <path>
                        <dependency>
                            <groupId>pro.fessional</groupId>
                            <artifactId>nevermore-processor</artifactId>
                            <version>${nevermore.version}</version>
                        </dependency>
                    </path>
                </annotationProcessorPaths>
            </configuration>
        </plugin>
    <plugins>
<build>

Conditional @SetterIf

For the protected field of Pojo, generate subclass with conditional setters in the same package, such as the following code.

public interface Outer {
    @SetterIf
    class Pojo {
        protected long id;
        protected boolean active;
        protected Enum<?> status;
        protected List<String> items;
    }
}

for each field, generate setters with the following style,

public interface $Outer {

    class Pojo extends Outer.Pojo {
        // conditional setId 
        public void setIdIf(Long id, boolean bool) {/*...*/}
        public void setIdIf(Supplier<Long> id, boolean bool) {/*...*/}
        public void setIdIf(Long id, Predicate<Long> bool) {/*...*/}
        public void setIdIf(Long id, Predicate<Long> bool, Supplier<Long>... ids) {/*...*/}
        public void setIdIfNot(Long id, Predicate<Long> bool) {/*...*/}
        public void setIdIfNot(Long id, Predicate<Long> bool, Supplier<Long>... ids) {/*...*/}
        public void setIdIf(UnaryOperator<Long> id) {/*...*/}
        
        // other field setters
    }
}

except for the $ prefix, the subclasses have the same qualified name as parent,

• $Pojo - for normal classes, prefix itself
• $Outer.Pojo - for inner classes, prefix the topmost class