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JSimpleDB classes that map Java model classes onto the core API.

There is a newer version: 3.6.1


/*
 * Copyright (C) 2015 Archie L. Cobbs. All rights reserved.
 */

package org.jsimpledb;

import java.util.ArrayList;
import java.util.List;

import org.jsimpledb.core.ObjId;

abstract class JComplexFieldInfo extends JFieldInfo {

    private ArrayList subFieldInfos = new ArrayList<>();

    JComplexFieldInfo(JComplexField jfield) {
        super(jfield);
    }

    public List getSubFieldInfos() {
        return this.subFieldInfos;
    }

    public abstract String getSubFieldInfoName(JSimpleFieldInfo subFieldInfo);

    public JSimpleFieldInfo getSubFieldInfo(String name) {
        for (JSimpleFieldInfo subFieldInfo : this.getSubFieldInfos()) {
            if (this.getSubFieldInfoName(subFieldInfo).equals(name))
                return subFieldInfo;
        }
        throw new IllegalArgumentException("no sub-field named `" + name + "' exists in " + this);
    }

    /**
     * Recurse for copying between transactions. Copies all objects referred to by any reference in the given
     * subfield of the given object from {@code srcTx} to {@code dstTx}.
     *
     * @param copyState copy state
     * @param srcTx source transaction
     * @param dstTx destination transaction
     * @param id ID of the object containing this complex field in {@code srcTx}
     * @param storageId storage ID of the sub-field of this field containing the references to copy
     * @param fieldIndex next index into {@code fieldIds}
     * @param fields fields to follow in the reference path
     */
    public abstract void copyRecurse(CopyState copyState, JTransaction srcTx, JTransaction dstTx,
      ObjId id, int storageId, int fieldIndex, int[] fields);

    // Recurse on the iteration of references
    protected void copyRecurse(CopyState copyState, JTransaction srcTx,
      JTransaction dstTx, Iterable it, int fieldIndex, int[] fields) {
        for (Object obj : it) {
            if (obj != null) {
                final ObjId id = (ObjId)obj;
                srcTx.copyTo(copyState, dstTx, id, id, false, fieldIndex, fields);
            }
        }
    }
}