oracle.toplink.essentials.tools.schemaframework.UniqueKeyConstraint Maven / Gradle / Ivy
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package oracle.toplink.essentials.tools.schemaframework;
import java.io.*;
import java.util.*;
import oracle.toplink.essentials.exceptions.*;
import oracle.toplink.essentials.internal.sessions.AbstractSession;
/**
*
* Purpose: Define a unique key constraint for a table.
*/
public class UniqueKeyConstraint implements Serializable {
protected String name;
protected Vector sourceFields; // field names
public UniqueKeyConstraint() {
this.name = "";
this.sourceFields = new Vector();
}
public UniqueKeyConstraint(String name, String sourceField) {
this();
this.name = name;
sourceFields.addElement(sourceField);
}
public UniqueKeyConstraint(String name, String[] sourceFields) {
this();
this.name = name;
for(String sourceField : sourceFields) {
this.sourceFields.addElement(sourceField);
}
}
/**
* PUBLIC:
*/
public void addSourceField(String sourceField) {
getSourceFields().addElement(sourceField);
}
/**
* INTERNAL:
* Append the database field definition string to the table creation statement.
*/
public void appendDBString(Writer writer, AbstractSession session) {
try {
writer.write("UNIQUE (");
for (Enumeration sourceEnum = getSourceFields().elements();
sourceEnum.hasMoreElements();) {
writer.write((String)sourceEnum.nextElement());
if (sourceEnum.hasMoreElements()) {
writer.write(", ");
}
}
writer.write(")");
} catch (IOException ioException) {
throw ValidationException.fileError(ioException);
}
}
/**
* PUBLIC:
*/
public String getName() {
return name;
}
/**
* PUBLIC:
*/
public Vector getSourceFields() {
return sourceFields;
}
/**
* PUBLIC:
*/
public void setName(String name) {
this.name = name;
}
/**
* PUBLIC:
*/
public void setSourceFields(Vector sourceFields) {
this.sourceFields = sourceFields;
}
}