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JaVers - object auditing and diff framework for Java

There is a newer version: 7.6.1

package org.javers.core.metamodel.object;

import org.javers.common.validation.Validate;
import org.javers.core.metamodel.type.ManagedType;
import org.javers.repository.jql.GlobalIdDTO;

import java.io.Serializable;

/**
 * Global ID of Client's domain object (CDO)
 */
public abstract class GlobalId implements Serializable {

    private final String typeName;

    GlobalId(String typeName) {
        Validate.argumentIsNotNull(typeName);
        this.typeName = typeName;
    }

    /**
     *      * For ex.:
     * org.javers.core.model.SnapshotEntity/1
     * org.javers.core.model.SnapshotEntity/2#setOfValueObjects
     * 
     */
    public abstract String value();

    @Override
    public String toString(){
        return this.value();
    }

    public boolean isTypeOf(ManagedType managedType){
        return getTypeName().equals(managedType.getName());
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) { return true; }

        //for testing
        if (o instanceof GlobalIdDTO) {
            return equals((GlobalIdDTO)o);
        }

        if ( !(o instanceof GlobalId) ) {return false;}

        return value().equals(((GlobalId) o).value());
    }

    //for testing
    private boolean equals(GlobalIdDTO o) {
        return this.value().equals(o.value());
    }

    @Override
    public int hashCode() {
        return value().hashCode();
    }

    public String getTypeName() {
        return typeName;
    }

    String getTypeNameShort() {
        String[] split = getTypeName().split("\\.");
        if (split.length >=2) {
            return "..." + split[split.length-1];
        }
        return getTypeName();
    }
}