DerbyHelper.java

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package com.venky.swf.db;

import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;

import com.venky.core.util.Bucket;

/**
 *
 * @author venky
 */
public class DerbyHelper extends JdbcTypeHelper{

	@Override
	public boolean supportsLimitSyntax(){
		return false;
	}

    @Override
    public String getAutoIncrementInstruction() {
            return (" INTEGER NOT NULL GENERATED BY DEFAULT AS IDENTITY ");
    }
    @Override
    public String getCurrentTimeStampKW(){
    	return "CURRENT_TIMESTAMP";
    }
    @Override
    public String getCurrentDateKW(){
    	return "CURRENT_DATE";
    }

    public String getForUpdateLiteral(){
    	return " FOR UPDATE WITH RS ";
    }
    public boolean isQueryTimeoutSupported(){ 
		return true;
	}
    @Override
	public String getDefaultKW(TypeRef<?> ref, Object value) {
    	if (value instanceof Boolean){
    		if ((Boolean)value){
    			return "1";
    		}else {
    			return "0";
    		}
    	}
    	return super.getDefaultKW(ref, value);
	}



    protected DerbyHelper() {
            /**
             * Specify size and scale for a data type only if the database accepts
             * them during table creation
             */
            registerjdbcSQLType(Boolean.class, new TypeRef<Boolean>(
                            java.sql.Types.SMALLINT, "SMALLINT", 0, 0, false,false,
                            new BooleanConverter()));
            registerjdbcSQLType(boolean.class, new TypeRef<Boolean>(
                            java.sql.Types.SMALLINT, "SMALLINT", 0, 0, false,false,
                            new BooleanConverter()));
            
            registerjdbcSQLType(Byte.class, new TypeRef<Byte>(java.sql.Types.SMALLINT,
                            "SMALLINT", 0, 0, false,false,new ByteConverter()));

            registerjdbcSQLType(byte.class, new TypeRef<Byte>(java.sql.Types.SMALLINT,
                            "SMALLINT", 0, 0, false,false,new ByteConverter()));

            registerjdbcSQLType(Short.class,
                            new TypeRef<Short>(java.sql.Types.SMALLINT, "SMALLINT", 0, 0,false,false,
                                            new ShortConverter()));
            registerjdbcSQLType(short.class,
                            new TypeRef<Short>(java.sql.Types.SMALLINT, "SMALLINT", 0, 0,false,false,
                                            new ShortConverter()));

            registerjdbcSQLType(Integer.class,
                            new TypeRef<Integer>(java.sql.Types.INTEGER, "INTEGER", 0, 0,false,false,
                                            new IntegerConverter()));

            registerjdbcSQLType(int.class, new TypeRef<Integer>(java.sql.Types.INTEGER, 
                            "INTEGER", 0, 0,false,false, new IntegerConverter()));

            registerjdbcSQLType(Long.class, new TypeRef<Long>(java.sql.Types.BIGINT,
                            "BIGINT", 0, 0, false,false,new LongConverter()));
            registerjdbcSQLType(long.class, new TypeRef<Long>(java.sql.Types.BIGINT,
                            "BIGINT", 0, 0, false,false, new LongConverter()));

            registerjdbcSQLType(BigDecimal.class, new TypeRef<BigDecimal>(
                            java.sql.Types.DECIMAL, "DECIMAL", 14, 8, false,false,
                            new BigDecimalConverter()));// also NUMERIC

            registerjdbcSQLType(Float.class, new TypeRef<Float>(java.sql.Types.REAL,
                            "REAL", 0, 0, false,false,new FloatConverter()));
            registerjdbcSQLType(float.class, new TypeRef<Float>(java.sql.Types.REAL,
                            "REAL", 0, 0, false,false,new FloatConverter()));

            registerjdbcSQLType(Double.class, new TypeRef<Double>(
                            java.sql.Types.DOUBLE, "DOUBLE", 0, 0,false,false, new DoubleConverter())); // ALSO
                                                                                                                                                            // FLOAT
            registerjdbcSQLType(double.class, new TypeRef<Double>(
                            java.sql.Types.DOUBLE, "DOUBLE", 0, 0, false,false,new DoubleConverter())); // ALSO
            
            registerjdbcSQLType(Bucket.class, new TypeRef<Bucket>(
                    java.sql.Types.DOUBLE, "DOUBLE", 0, 0, false,false,new BucketConverter())); // ALSO
                                                                                                                                                    // FLOAT

            registerjdbcSQLType(Date.class, new TypeRef<Date>(java.sql.Types.DATE,
                            "DATE", 0, 0, true,false, new DateConverter()));
            registerjdbcSQLType(Time.class, new TypeRef<Time>(
                            java.sql.Types.TIME, "TIME", 0, 0, true ,false, new TimeConverter()));
            
            registerjdbcSQLType(java.sql.Timestamp.class, new TypeRef<Timestamp>(
                            java.sql.Types.TIMESTAMP, "TIMESTAMP", 0, 0, true,false,
                            new TimestampConverter()));

            registerjdbcSQLType(String.class, new TypeRef<String>(
                            java.sql.Types.VARCHAR, "VARCHAR", 128, 0, true,true,
                            new StringConverter())); // ALSO CHAR, LONG VARCHAR

            registerjdbcSQLType(Reader.class, new TypeRef<Reader>(java.sql.Types.CLOB,
                            "CLOB", 0, 0, true , true,new ReaderConverter()));

            registerjdbcSQLType(InputStream.class, new TypeRef<InputStream>(java.sql.Types.BLOB,
                            "BLOB", 0, 0, true , true,new InputStreamConverter()));

    }
}