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package com.salesforce.phoenix.pig.hadoop;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.io.Writable;
import org.apache.pig.ResourceSchema.ResourceFieldSchema;
import org.apache.pig.data.DataType;
import com.salesforce.phoenix.pig.TypeUtil;
import com.salesforce.phoenix.schema.PDataType;
import com.salesforce.phoenix.util.ColumnInfo;
/**
* A {@link Writable} representing a Phoenix record. This class
* does a type mapping and sets the value accordingly in the
* {@link PreparedStatement}
*
* @author pkommireddi
*
*/
public class PhoenixRecord implements Writable {
private final List<Object> values;
private final ResourceFieldSchema[] fieldSchemas;
public PhoenixRecord(ResourceFieldSchema[] fieldSchemas) {
this.values = new ArrayList<Object>();
this.fieldSchemas = fieldSchemas;
}
@Override
public void readFields(DataInput in) throws IOException {
}
@Override
public void write(DataOutput out) throws IOException {
}
public void write(PreparedStatement statement, List<ColumnInfo> columnMetadataList) throws SQLException {
for (int i = 0; i < columnMetadataList.size(); i++) {
Object o = values.get(i);
byte type = (fieldSchemas == null) ? DataType.findType(o) : fieldSchemas[i].getType();
Object upsertValue = convertTypeSpecificValue(o, type, columnMetadataList.get(i).getSqlType());
if (upsertValue != null) {
statement.setObject(i + 1, upsertValue, columnMetadataList.get(i).getSqlType());
} else {
statement.setNull(i + 1, columnMetadataList.get(i).getSqlType());
}
}
statement.execute();
}
public void add(Object value) {
values.add(value);
}
private Object convertTypeSpecificValue(Object o, byte type, Integer sqlType) {
PDataType pDataType = PDataType.fromTypeId(sqlType);
return TypeUtil.castPigTypeToPhoenix(o, type, pDataType);
}
}