Example usage for java.sql Blob toString

Introduction

In this page you can find the example usage for java.sql Blob toString.

Prototype

public String toString() 

Source Link

Document

Returns a string representation of the object.

Usage

From source file:au.com.ish.derbydump.derbydump.metadata.Column.java

/**
 * Get a string value for the value in this column in the datarow
 * //w ww  .  jav a  2 s .  c o  m
 * @param dataRow The row which we are exporting
 * @return an SQL statement compliant string version of the value
 */
public String toString(ResultSet dataRow) throws SQLException {

    switch (getColumnDataType()) {
    case Types.BINARY:
    case Types.VARBINARY:
    case Types.BLOB: {
        Blob obj = dataRow.getBlob(columnName);
        return (obj == null) ? "NULL" : processBinaryData(obj);
    }

    case Types.CLOB: {
        Clob obj = dataRow.getClob(columnName);
        return (obj == null) ? "NULL" : processClobData(obj);
    }

    case Types.CHAR:
    case Types.LONGNVARCHAR:
    case Types.VARCHAR: {
        String obj = dataRow.getString(columnName);
        return (obj == null) ? "NULL" : processStringData(obj);
    }

    case Types.TIME: {
        Time obj = dataRow.getTime(columnName);
        return (obj == null) ? "NULL" : processStringData(obj.toString());
    }

    case Types.DATE: {
        Date obj = dataRow.getDate(columnName);
        return (obj == null) ? "NULL" : processStringData(obj.toString());
    }

    case Types.TIMESTAMP: {
        Timestamp obj = dataRow.getTimestamp(columnName);
        return (obj == null) ? "NULL" : processStringData(obj.toString());
    }

    case Types.SMALLINT: {
        Object obj = dataRow.getObject(columnName);
        return (obj == null) ? "NULL" : obj.toString();
    }

    case Types.BIGINT: {
        Object obj = dataRow.getObject(columnName);
        return (obj == null) ? "NULL" : obj.toString();
    }

    case Types.INTEGER: {
        Object obj = dataRow.getObject(columnName);
        return (obj == null) ? "NULL" : obj.toString();
    }

    case Types.NUMERIC:
    case Types.DECIMAL: {
        BigDecimal obj = dataRow.getBigDecimal(columnName);
        return (obj == null) ? "NULL" : String.valueOf(obj);
    }

    case Types.REAL:
    case Types.FLOAT: {
        Float obj = dataRow.getFloat(columnName);
        // dataRow.getFloat() always returns a value. only way to check the null is wasNull() method
        return (dataRow.wasNull()) ? "NULL" : String.valueOf(obj);
    }

    case Types.DOUBLE: {
        Double obj = dataRow.getDouble(columnName);
        return (dataRow.wasNull()) ? "NULL" : String.valueOf(obj);
    }

    default: {
        Object obj = dataRow.getObject(columnName);
        return (obj == null) ? "NULL" : obj.toString();
    }
    }
}

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