Example usage for weka.core.converters DatabaseSaver DatabaseSaver

Introduction

In this page you can find the example usage for weka.core.converters DatabaseSaver DatabaseSaver.

Prototype

public DatabaseSaver() throws Exception 

Source Link

Document

Constructor.

Usage

From source file:adams.flow.sink.WekaDatabaseWriter.java

License:Open Source License

/**
 * Executes the flow item./*from w  w w  .  j  a  v  a  2s.  co  m*/
 *
 * @return      null if everything is fine, otherwise error message
 */
@Override
protected String doExecute() {
    String result;
    Instances data;
    Instance inst;

    result = null;

    if (m_InputToken.getPayload() instanceof Instance) {
        inst = (Instance) m_InputToken.getPayload();
        data = inst.dataset();
    } else {
        data = (Instances) m_InputToken.getPayload();
        inst = null;
    }

    try {
        if (m_Saver == null) {
            m_Saver = new DatabaseSaver();
            m_Saver.setUrl(m_URL);
            m_Saver.setUser(m_User);
            m_Saver.setPassword(m_Password.getValue());
            m_Saver.setTableName(m_TableName);
            m_Saver.setRelationForTableName(m_UseRelationNameAsTable);
            m_Saver.setAutoKeyGeneration(m_AutoKeyGeneration);
            if (!m_CustomPropsFile.isDirectory())
                m_Saver.setCustomPropsFile(m_CustomPropsFile.getAbsoluteFile());
        }
        if (inst == null) {
            m_Saver.setInstances(data);
            m_Saver.writeBatch();
        } else {
            m_Saver.writeIncremental(inst);
        }
    } catch (Exception e) {
        result = handleException("Failed to write to database: " + m_URL, e);
    }

    return result;
}

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From source file:core.DatabaseSaverEx.java

License:Open Source License

/**
 * Main method.//from   w  w  w .j  a  v  a2 s .c  o m
 *
 * @param options should contain the options of a Saver.
 */
public static void main(String[] options) {

    StringBuffer text = new StringBuffer();
    text.append("\n\nDatabaseSaver options:\n");
    try {
        DatabaseSaver asv = new DatabaseSaver();
        try {
            Enumeration enumi = asv.listOptions();
            while (enumi.hasMoreElements()) {
                Option option = (Option) enumi.nextElement();
                text.append(option.synopsis() + '\n');
                text.append(option.description() + '\n');
            }
            asv.setOptions(options);
            asv.setDestination();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        //incremental

        /*asv.setRetrieval(INCREMENTAL);
        Instances instances = asv.getInstances();
        asv.setStructure(instances);
        for(int i = 0; i < instances.numInstances(); i++){ //last instance is null and finishes incremental saving
            asv.writeIncremental(instances.instance(i));
        }
        asv.writeIncremental(null);*/

        //batch
        asv.writeBatch();
    } catch (Exception ex) {
        ex.printStackTrace();
        System.out.println(text);
    }

}

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