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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.cayenne.merge;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.dba.QuotingStrategy;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DbEntity;
public class SetPrimaryKeyToDb extends AbstractToDbToken.Entity {
private Collection<DbAttribute> primaryKeyOriginal;
private Collection<DbAttribute> primaryKeyNew;
private String detectedPrimaryKeyName;
public SetPrimaryKeyToDb(DbEntity entity, Collection<DbAttribute> primaryKeyOriginal,
Collection<DbAttribute> primaryKeyNew, String detectedPrimaryKeyName) {
super(entity);
this.primaryKeyOriginal = primaryKeyOriginal;
this.primaryKeyNew = primaryKeyNew;
this.detectedPrimaryKeyName = detectedPrimaryKeyName;
}
@Override
public List<String> createSql(DbAdapter adapter) {
List<String> sqls = new ArrayList<String>();
if (!primaryKeyOriginal.isEmpty()) {
appendDropOriginalPrimaryKeySQL(adapter, sqls);
}
appendAddNewPrimaryKeySQL(adapter, sqls);
return sqls;
}
protected void appendDropOriginalPrimaryKeySQL(DbAdapter adapter, List<String> sqls) {
if (detectedPrimaryKeyName == null) {
return;
}
sqls.add("ALTER TABLE " + adapter.getQuotingStrategy().quotedFullyQualifiedName(getEntity())
+ " DROP CONSTRAINT " + detectedPrimaryKeyName);
}
protected void appendAddNewPrimaryKeySQL(DbAdapter adapter, List<String> sqls) {
QuotingStrategy quotingStrategy = adapter.getQuotingStrategy();
StringBuilder sql = new StringBuilder();
sql.append("ALTER TABLE ");
sql.append(quotingStrategy.quotedFullyQualifiedName(getEntity()));
sql.append(" ADD PRIMARY KEY (");
for (Iterator<DbAttribute> it = primaryKeyNew.iterator(); it.hasNext();) {
sql.append(quotingStrategy.quotedName(it.next()));
if (it.hasNext()) {
sql.append(", ");
}
}
sql.append(")");
sqls.add(sql.toString());
}
public MergerToken createReverse(MergerFactory factory) {
return factory.createSetPrimaryKeyToModel(getEntity(), primaryKeyNew, primaryKeyOriginal,
detectedPrimaryKeyName);
}
public String getTokenName() {
return "Set Primary Key";
}
}