com.clickzetta.client.jdbc.core.CZResultSetMetaData Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of clickzetta-java Show documentation
The java SDK for clickzetta's Lakehouse
There is a newer version: 2.0.0
package com.clickzetta.client.jdbc.core;;

import java.sql.*;
import java.util.List;


public class CZResultSetMetaData implements ResultSetMetaData {
  CZResultSetMetaData(List columnMetadatas) {
    columnCount = columnMetadatas.size();
    this.columnMetaDatas = columnMetadatas;
  }

  private final int columnCount;
  private final List columnMetaDatas;

  cz.proto.FieldSchema getFieldSchema(int column) {
    return columnMetaDatas.get(column - 1).fieldSchema;
  }

  @Override
  public int getColumnCount() throws SQLException {
    return columnCount;
  }

  @Override
  public boolean isAutoIncrement(int column) throws SQLException {
    return false;
  }

  @Override
  public boolean isCaseSensitive(int column) throws SQLException {
    return false;
  }

  @Override
  public boolean isSearchable(int column) throws SQLException {
    return true;
  }

  @Override
  public boolean isCurrency(int column) throws SQLException {
    return false;
  }

  @Override
  public int isNullable(int column) throws SQLException {
    return columnMetaDatas.get(column - 1).isNullable();
  }

  @Override
  public boolean isSigned(int column) throws SQLException {
    return columnMetaDatas.get(column - 1).isSigned();
  }

  @Override
  public int getColumnDisplaySize(int column) throws SQLException {
    if (columnCount >= column && columnMetaDatas != null) {
      return columnMetaDatas.get(column - 1).getColumnDisplayLength();
    } else {
      return 0;
    }
  }

  @Override
  public String getColumnLabel(int column) throws SQLException {
    if (columnCount >= column && columnMetaDatas != null) {
      return columnMetaDatas.get(column - 1).getColumnName();
    } else {
      return "C" + (column - 1);
    }
  }

  @Override
  public String getColumnName(int column) throws SQLException {
    if (columnCount >= column && columnMetaDatas != null) {
      return columnMetaDatas.get(column - 1).getColumnName();
    } else {
      return "C" + (column - 1);
    }
  }

  @Override
  public String getSchemaName(int column) throws SQLException {
    throw new SQLException("NotSupported");
  }

  @Override
  public int getPrecision(int column) throws SQLException {
    return columnMetaDatas.get(column - 1).getPrecision();
  }

  @Override
  public int getScale(int column) throws SQLException {
    return columnMetaDatas.get(column - 1).getScale();
  }

  @Override
  public String getTableName(int column) throws SQLException {
    throw new SQLException("NotSupported");
  }

  @Override
  public String getCatalogName(int column) throws SQLException {
    throw new SQLException("NotSupported");
  }

  @Override
  public int getColumnType(int column) throws SQLException {
    if (columnCount >= column && columnMetaDatas != null) {
      return columnMetaDatas.get(column - 1).getColumnType();
    } else {
      return 0;
    }
  }

  @Override
  public String getColumnTypeName(int column) throws SQLException {
    if (columnCount >= column && columnMetaDatas != null) {
      return columnMetaDatas.get(column - 1).getColumnTypeName();
    } else {
      return "";
    }
  }

  @Override
  public boolean isReadOnly(int column) throws SQLException {
    return true;
  }

  @Override
  public boolean isWritable(int column) throws SQLException {
    return false;
  }

  @Override
  public boolean isDefinitelyWritable(int column) throws SQLException {
    return false;
  }

  @Override
  public String getColumnClassName(int column) throws SQLException {
    if (columnCount >= column && columnMetaDatas != null) {
      return CZColumnMetaData.getColumnClassName(columnMetaDatas.get(column - 1).getColumnType());
    }
    throw new SQLException("getColumnClassName " + column + " error");
  }

  @Override
  public  T unwrap(Class iface) throws SQLException {
    return null;
  }

  @Override
  public boolean isWrapperFor(Class iface) throws SQLException {
    return false;
  }
}