Flink CDC HBase字段类型与Flink SQL类型之间的转换可以通过以下Java代码实现：
import org.apache.flink.table.types.DataType;
import org.apache.flink.table.types.logical.LogicalType;
import org.apache.flink.table.types.logical.RowType;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.util.Bytes;
public class FlinkCDCHBaseTypeConverter {
public static Object convertHBaseFieldToFlinkSQLType(Result result, String columnName, DataType dataType) {
Object value = result.getValue(Bytes.toBytes(columnName), dataType.getTypeID().toString());
if (value == null) {
return null;
}
switch (dataType.getTypeID()) {
case BOOLEAN:
return Boolean.parseBoolean(value.toString());
case TINYINT:
return Short.parseShort(value.toString());
case SMALLINT:
return Integer.parseInt(value.toString());
case INTEGER:
return Long.parseLong(value.toString());
case BIGINT:
return BigInteger.valueOf(Long.parseLong(value.toString()));
case FLOAT:
return Float.parseFloat(value.toString());
case DOUBLE:
return Double.parseDouble(value.toString());
case DECIMAL:
return new BigDecimal(value.toString());
case CHAR:
return value.toString();
case VARCHAR:
return value.toString();
case DATE:
return Date.valueOf(value.toString());
case TIMESTAMP:
return Timestamp.valueOf(value.toString());
case TIME:
return Time.valueOf(value.toString());
case BINARY:
return Bytes.toBytes(value.toString());
case ARRAY:
return convertArrayHBaseFieldToFlinkSQLType(result, columnName, (RowType) dataType);
case MAP:
return convertMapHBaseFieldToFlinkSQLType(result, columnName, (RowType) dataType);
case STRUCT:
return convertStructHBaseFieldToFlinkSQLType(result, columnName, (RowType) dataType);
default:
throw new IllegalArgumentException("Unsupported Flink SQL type: " + dataType);
}
}
private static Object[] convertArrayHBaseFieldToFlinkSQLType(Result result, String columnName, RowType arrayType) {
// TODO: Implement conversion for HBase Array field type to Flink SQL Array type
throw new UnsupportedOperationException("Conversion for HBase Array field type to Flink SQL Array type not implemented");
}
private static Object[] convertMapHBaseFieldToFlinkSQLType(Result result, String columnName, RowType mapType) {
// TODO: Implement conversion for HBase Map field type to Flink SQL Map type
throw new UnsupportedOperationException("Conversion for HBase Map field type to Flink SQL Map type not implemented");
}
private static Object[] convertStructHBaseFieldToFlinkSQLType(Result result, String columnName, RowType structType) {
// TODO: Implement conversion for HBase Struct field type to Flink SQL Struct type
throw new UnsupportedOperationException("Conversion for HBase Struct field type to Flink SQL Struct type not implemented");
}
}
这个代码示例提供了一个名为FlinkCDCHBaseTypeConverter的类，其中包含一个名为convertHBaseFieldToFlinkSQLType的静态方法。这个方法接受一个Result对象、一个列名和一个DataType对象作为参数，并根据HBase字段类型将其转换为相应的Flink SQL类型。请注意，这个示例仅实现了部分类型的转换，您需要根据实际需求实现其他类型的转换。
