Playorm java.lang.Integer无法强制转换为java.math.BigInteger

Question

I tried to construct a basic ad hoc query example based on A basic ad hoc query example .

But, I can't insert a Integer value. I think it is because of this piece of code:

private Class getStorageTypeAsClass() {
    switch (getStorageType())
    {
        case STRING:
            return String.class;
        case INTEGER:
            return BigInteger.class;
    }
}

My code:

package playorm;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.UUID;

import com.alvazan.orm.api.base.Bootstrap;
import com.alvazan.orm.api.base.DbTypeEnum;
import com.alvazan.orm.api.base.NoSqlEntityManager;
import com.alvazan.orm.api.base.NoSqlEntityManagerFactory;
import com.alvazan.orm.api.z3api.NoSqlTypedSession;
import com.alvazan.orm.api.z8spi.KeyValue;
import com.alvazan.orm.api.z8spi.meta.DboColumnCommonMeta;
import com.alvazan.orm.api.z8spi.meta.DboColumnIdMeta;
import com.alvazan.orm.api.z8spi.meta.DboDatabaseMeta;
import com.alvazan.orm.api.z8spi.meta.DboTableMeta;
import com.alvazan.orm.api.z8spi.meta.TypedColumn;
import com.alvazan.orm.api.z8spi.meta.TypedRow;

public class PlayOrm {
    private static NoSqlEntityManager mgr;

    @SuppressWarnings({ "unchecked", "rawtypes" })
    public static void main(String[] args) {

        Map properties = new HashMap();
        properties.put(Bootstrap.AUTO_CREATE_KEY, "create");

        String clusterName = "Test Cluster";
        String seeds = "localhost:9160";
        String keyspace = "nosql";

        Bootstrap.createAndAddBestCassandraConfiguration(properties, clusterName, keyspace, seeds);
        NoSqlEntityManagerFactory factory = Bootstrap.create(DbTypeEnum.CASSANDRA, properties,null,null);
        mgr = factory.createEntityManager();
        DboDatabaseMeta metaDb = mgr.find(DboDatabaseMeta.class,
                DboDatabaseMeta.META_DB_ROWKEY);
        DboTableMeta meta = new DboTableMeta();
        meta.setup(null, "MyEntity", false);
        metaDb.addMetaClassDbo(meta);

        DboColumnIdMeta idMeta = new DboColumnIdMeta();
        idMeta.setup(meta, "idField", String.class, true);
        mgr.put(idMeta);

        DboColumnCommonMeta fieldDbo = new DboColumnCommonMeta();
        fieldDbo.setup(meta, "firstname", String.class, true, false);
        mgr.put(fieldDbo);
        DboColumnCommonMeta fieldDbo2 = new DboColumnCommonMeta();
        fieldDbo2.setup(meta, "lastname", Integer.class, true, false);
        mgr.put(fieldDbo2);

        mgr.put(meta);
        mgr.flush();

        NoSqlTypedSession session = mgr.getTypedSession();
        for (int i = 0; i < 10000; i++) {
            TypedRow typedRow = session.createTypedRow("MyEntity");
            typedRow.addColumn("firstname", "harry");
                        //**THE PROBLEM**
            typedRow.addColumn("lastname", new Integer(i));
            typedRow.setRowKey(UUID.randomUUID().toString());

            session.put("MyEntity", typedRow);

            if(i > 1000 && (i % 10) == 0 ){
                session.flush();
                mgr.clear();
            }

        }
        session.flush();

}

There is no option to return Integer.class. So, it can't construct a Integer converter:

Exception in thread "main" java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.alvazan.orm.impl.meta.data.NoSqlProxyImpl.invoke(NoSqlProxyImpl.java:96)
    at com.alvazan.orm.api.z8spi.meta.DboColumnCommonMeta_$$_javassist_1.convertToStorage2(DboColumnCommonMeta_$$_javassist_1.java)
    at com.alvazan.orm.api.z8spi.meta.TypedRow.addColumn(TypedRow.java:99)
    at playorm.PlayOrm.main(PlayOrm.java:62)
Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.math.BigInteger
    at com.alvazan.orm.api.z8spi.conv.Converters$BigIntegerConverter.convertToNoSqlImpl(Converters.java:89)
    at com.alvazan.orm.api.z8spi.conv.Converters$BaseConverter.convertToNoSql(Converters.java:138)
    at com.alvazan.orm.api.z8spi.meta.DboColumnMeta.convertToStorage2(DboColumnMeta.java:167)
    at com.alvazan.orm.api.z8spi.meta.DboColumnCommonMeta_$$_javassist_1._d8convertToStorage2(DboColumnCommonMeta_$$_javassist_1.java)
    ... 8 more

Answer 1

TypedRow is a special api and allows BigInteger, BigDecimal and String types right now.....These types however when stored are stored as the lowest bytes possible so an int value of 10 is stored as one byte.

out of curiosity, why not use a MyEntity.java class annotated with @NoSqlEntity instead??? In your case, using a POJO would seem more beneficial.

MyEntity.java can have any primitive types, int, double, etc. etc.

We thought you were using the entities as most use the entities to make development faster.

later, Dean