xpertss.json.schema.processors.validation.SchemaContextEquivalence Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of json-schema Show documentation

A Java implementation of the JSON Schema specification.

The newest version!

package xpertss.json.schema.processors.validation;

import xpertss.json.schema.processors.data.SchemaContext;
import com.google.common.base.Equivalence;

/**
 * Equivalence for schema contexts
 *
 * This is used by {@link ValidationChain} and {@link ValidationProcessor} to
 * cache computation results. Two schema contexts are considered equivalent if:
 * 
 *
 * 
 *     schema trees are considered equivalent,
 *     and the type of the instance is the same.
 * 
 *
 */
public final class SchemaContextEquivalence extends Equivalence {

    private static final Equivalence INSTANCE = new SchemaContextEquivalence();

    public static Equivalence getInstance()
    {
        return INSTANCE;
    }

    @Override
    protected boolean doEquivalent(SchemaContext a, SchemaContext b)
    {
        return a.getSchema().equals(b.getSchema())
            && a.getInstanceType() == b.getInstanceType();
    }

    @Override
    protected int doHash(SchemaContext t)
    {
        return t.getSchema().hashCode() ^ t.getInstanceType().hashCode();
    }
}