Hi Kasper, that's something from the begining of the project. ResultSetMetaData needs this information (JDBC 2.1).
Maybe that's a source remains Cheers Gerhard >-----Original Message----- >From: Kasper Nielsen [mailto:[EMAIL PROTECTED] >Sent: Wednesday, November 14, 2001 6:21 PM >To: Avalon Developers List >Subject: Re: cvs commit: >jakarta-avalon-cornerstone/apps/db/src/java/org/apache/avalon/db/data/im >pl AbstractColumn.java VarCharColumn.java DefaultColumn.java > > >whats the difference between >> public boolean isReadOnly() { >> //ToDo: implementation >> return false; >> } >> >and > >> public boolean isWritable() { >> //ToDo: implementation >> return false; >> } > > > > >we might wanna call this isIndexed >> public boolean isSearchable() { >> //ToDo: implementation >> return false; >> } >> > > >- Kasper > >----- Original Message ----- > >> 1.1 >jakarta-avalon-cornerstone/apps/db/src/java/org/apache/avalon/db/data/impl/A >bstractColumn.java >> >> Index: AbstractColumn.java >> =================================================================== >> >> /* >> * Copyright (C) The Apache Software Foundation. All rights reserved. >> * >> * This software is published under the terms of the Apache Software >License >> * version 1.1, a copy of which has been included with this distribution >in >> * the LICENSE file. >> */ >> package org.apache.avalon.db.data.impl; >> >> >> >> import org.apache.avalon.db.data.Table; >> import org.apache.avalon.db.data.Queryable; >> import org.apache.avalon.db.data.Column; >> >> >> /** >> * Class AbstractColumn >> * >> * >> * @author Paul Hammant <a >href="mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED]</a> >> * @author Gerhard Froehlich <a >href="mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED]</a>* >> * @version $Revision: 1.1 $ >> */ >> public abstract class AbstractColumn implements Column { >> >> protected String mName; >> protected String mSqlType; >> protected String mJavaType; >> >> /** >> * Constructor AbstractColumn >> * >> * >> * @param name >> * @param sqlType >> * @param javaType >> * >> */ >> public AbstractColumn(String name, String sqlType, String javaType) >{ >> >> mName = name; >> mSqlType = sqlType; >> mJavaType = javaType; >> } >> >> /** >> * Method getSQLType >> * >> * >> * @return >> * >> */ >> public String getSQLType() { >> return mSqlType; >> } >> >> /** >> * Method getName >> * >> * >> * @return >> * >> */ >> public String getName() { >> return mName; >> } >> >> /** >> * Method getJavaType >> * >> * >> * @return >> * >> */ >> public String getJavaType() { >> return mJavaType; >> } >> >> /** methods for the metadata */ >> public int getColumnDisplaySize() { >> //ToDo: implementation >> return 0; >> } >> >> public String getColumnLabel() { >> return mName; >> } >> >> public String getColumnName() { >> return mName; >> } >> >> public int getColumnType() { >> //ToDo: implementation >> return 0; >> } >> >> public String getColumnTypeName() { >> return mSqlType; >> } >> >> public int getPrecision() { >> //ToDo: implementation >> return 0; >> } >> >> public int getScale() { >> //ToDo: implementation >> return 0; >> } >> >> public String getSchemaName() { >> //ToDo: implementation >> return null; >> } >> >> public String getCatalogName() { >> //ToDo: implementation >> return null; >> } >> >> public String getColumnClassName() { >> //ToDo: implementation >> return null; >> } >> >> public String getTableName() { >> //ToDo: implementation >> return null; >> } >> >> public boolean isAutoIncrement() { >> //ToDo: implementation >> return false; >> } >> >> public boolean isCaseSensitive() { >> //ToDo: implementation >> return false; >> } >> >> public boolean isCurrency() { >> //ToDo: implementation >> return false; >> } >> >> public boolean isDefinitelyWritable() { >> //ToDo: implementation >> return false; >> } >> >> public int isNullable() { >> //ToDo: implementation >> return 0; >> } >> >> public boolean isReadOnly() { >> //ToDo: implementation >> return false; >> } >> >> public boolean isSearchable() { >> //ToDo: implementation >> return false; >> } >> >> public boolean isSigned() { >> //ToDo: implementation >> return false; >> } >> >> public boolean isWritable() { >> //ToDo: implementation >> return false; >> } >> >> } >> >> >> >> 1.1 >jakarta-avalon-cornerstone/apps/db/src/java/org/apache/avalon/db/data/impl/V >arCharColumn.java >> >> Index: VarCharColumn.java >> =================================================================== >> >> /* >> * Copyright (C) The Apache Software Foundation. All rights reserved. >> * >> * This software is published under the terms of the Apache Software >License >> * version 1.1, a copy of which has been included with this distribution >in >> * the LICENSE file. >> */ >> package org.apache.avalon.db.data.impl; >> >> >> >> import org.apache.avalon.db.data.Table; >> import org.apache.avalon.db.data.Queryable; >> import org.apache.avalon.db.data.Column; >> import org.apache.avalon.db.data.ValidationException; >> >> >> /** >> * Class VarCharColumn >> * >> * >> * @author Paul Hammant <a >href="mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED]</a> >> * @author Gerhard Froehlich <a >href="mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED]</a>* >> * @version $Revision: 1.1 $ >> */ >> public class VarCharColumn extends AbstractColumn { >> >> private int mMaxLength; >> >> /** >> * Constructor VarCharColumn >> * >> * >> * @param name >> * @param maxLength >> * @param javaType >> * >> */ >> public VarCharColumn(String name, int maxLength) { >> super(name,"varchar",String.class.getName()); >> mMaxLength = maxLength; >> } >> >> public void test(Object obj) throws ValidationException { >> String str = (String) obj; >> if (str.length() > mMaxLength) { >> throw new ValidationException("String " + mName + "at is too >long at " + str.length()); >> } >> } >> >> >> >> } >> >> >> >> >> -- >> To unsubscribe, e-mail: ><mailto:[EMAIL PROTECTED]> >> For additional commands, e-mail: ><mailto:[EMAIL PROTECTED]> >> > > > >-- >To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> > > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
