Package org.h2.result

Class LazyResult

    • Field Detail

      • expressions

        private final Expression[] expressions
      • closed

        private boolean closed
      • limit

        private long limit
    • Method Detail

      • setLimit

        public void setLimit​(long limit)
      • isLazy

        public boolean isLazy()
        Description copied from interface: ResultInterface
        Check if this a lazy execution result.
        Returns:
        true if it is a lazy result
      • reset

        public void reset()
        Description copied from interface: ResultInterface
        Go to the beginning of the result, that means before the first row.
      • skip

        public boolean skip()
        Go to the next row and skip it.
        Returns:
        true if a row exists
      • hasNext

        public boolean hasNext()
        Description copied from interface: ResultInterface
        Check if this result has more rows to fetch.
        Returns:
        true if it has
      • fetchNextRow

        protected abstract Value[] fetchNextRow()
        Fetch next row or null if none available.
        Returns:
        next row or null
      • skipNextRow

        protected boolean skipNextRow()
        Skip next row.
        Returns:
        true if next row was available
      • getRowCount

        public long getRowCount()
        Description copied from interface: ResultInterface
        Get the number of rows in this object.
        Returns:
        the number of rows
      • isClosed

        public boolean isClosed()
        Description copied from interface: ResultInterface
        Check if this result set is closed.
        Returns:
        true if it is
      • close

        public void close()
        Description copied from interface: ResultInterface
        Close the result and delete any temporary files
      • getAlias

        public java.lang.String getAlias​(int i)
        Description copied from interface: ResultInterface
        Get the column alias name for the column.
        Parameters:
        i - the column number (starting with 0)
        Returns:
        the alias name
      • getSchemaName

        public java.lang.String getSchemaName​(int i)
        Description copied from interface: ResultInterface
        Get the schema name for the column, if one exists.
        Parameters:
        i - the column number (starting with 0)
        Returns:
        the schema name or null
      • getTableName

        public java.lang.String getTableName​(int i)
        Description copied from interface: ResultInterface
        Get the table name for the column, if one exists.
        Parameters:
        i - the column number (starting with 0)
        Returns:
        the table name or null
      • getColumnName

        public java.lang.String getColumnName​(int i)
        Description copied from interface: ResultInterface
        Get the column name.
        Parameters:
        i - the column number (starting with 0)
        Returns:
        the column name
      • getColumnType

        public TypeInfo getColumnType​(int i)
        Description copied from interface: ResultInterface
        Get the column data type.
        Parameters:
        i - the column number (starting with 0)
        Returns:
        the column data type
      • isIdentity

        public boolean isIdentity​(int i)
        Description copied from interface: ResultInterface
        Check if this is an identity column.
        Parameters:
        i - the column number (starting with 0)
        Returns:
        true for identity columns
      • getNullable

        public int getNullable​(int i)
        Description copied from interface: ResultInterface
        Check if this column is nullable.
        Parameters:
        i - the column number (starting with 0)
        Returns:
        Column.NULLABLE_*
      • setFetchSize

        public void setFetchSize​(int fetchSize)
        Description copied from interface: ResultInterface
        Set the fetch size for this result set.
        Parameters:
        fetchSize - the new fetch size
      • getFetchSize

        public int getFetchSize()
        Description copied from interface: ResultInterface
        Get the current fetch size for this result set.
        Returns:
        the fetch size