com.google.inject.spi.ScopeBinding Maven / Gradle / Ivy

Go to download
package com.google.inject.spi;

import com.google.inject.Binder;
import com.google.inject.Scope;

import java.lang.annotation.Annotation;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Registration of a scope annotation with the scope that implements it. Instances are created
 * explicitly in a module using {@link com.google.inject.Binder#bindScope(Class, Scope) bindScope()}
 * statements:
 *  *     Scope recordScope = new RecordScope();
 *     bindScope(RecordScoped.class, new RecordScope());
 *
 */
public final class ScopeBinding implements Element {
    private final Object source;
    private final Class annotationType;
    private final Scope scope;

    ScopeBinding(Object source, Class annotationType, Scope scope) {
        this.source = checkNotNull(source, "source");
        this.annotationType = checkNotNull(annotationType, "annotationType");
        this.scope = checkNotNull(scope, "scope");
    }

    public Object getSource() {
        return source;
    }

    public Class getAnnotationType() {
        return annotationType;
    }

    public Scope getScope() {
        return scope;
    }

    public  T acceptVisitor(ElementVisitor visitor) {
        return visitor.visit(this);
    }

    public void applyTo(Binder binder) {
        binder.withSource(getSource()).bindScope(annotationType, scope);
    }
}