示例#1
0
    public NSArray statementsToDropPrimaryKeyConstraintsOnEntityGroups(
        NSArray entityGroups,
        EOSchemaSynchronizationModelChanges changes,
        EOSchemaGenerationOptions options) {
      if (entityGroups == null) return NSArray.EmptyArray;
      if (changes == null) changes = newChanges();

      NSMutableArray expressions = new NSMutableArray();
      for (Enumeration enumerator = entityGroups.objectEnumerator();
          enumerator.hasMoreElements(); ) {
        NSArray entities = (NSArray) enumerator.nextElement();
        EOEntity _last =
            (EOEntity)
                entities.lastObject(); // only need entity to get the table name for the group
        String nameInObjectStore =
            _nameInObjectStoreForEntityGroupWithChangeDictionary(
                entities, changes.changesForTableNamed(_last.externalName()));
        if ((nameInObjectStore != null) && (!"".equals(nameInObjectStore))) {
          expressions.addObject(
              this._expressionForString(
                  "delete from _SYS_RELATIONSHIP where source_table = '"
                      + nameInObjectStore
                      + "' or dest_table = '"
                      + nameInObjectStore
                      + "'"));
        }
      }
      return expressions.immutableClone();
    }
示例#2
0
 public NSArray primaryKeySupportStatementsForEntityGroups(NSArray entityGroups) {
   String primaryKeyTableName = ((JDBCAdaptor) this.adaptor()).plugIn().primaryKeyTableName();
   NSMutableArray primaryKeyExpressions = new NSMutableArray();
   primaryKeyExpressions.addObject(
       this._expressionForString(
           "CREATE TABLE " + primaryKeyTableName + " (NAME char(40), PK long)"));
   primaryKeyExpressions.addObject(
       this._expressionForString(
           "ALTER TABLE " + primaryKeyTableName + " ADD PRIMARY KEY (NAME)"));
   primaryKeyExpressions.addObject(
       this._expressionForString("CREATE UNIQUE INDEX " + primaryKeyTableName + " NAME"));
   return primaryKeyExpressions.immutableClone();
 }
示例#3
0
    public NSArray primaryKeyConstraintStatementsForEntityGroup(NSArray entityGroup) {
      if (entityGroup == null) return NSArray.EmptyArray;

      NSMutableDictionary columnNameDictionary = new NSMutableDictionary();
      NSMutableArray primaryKeyConstraintExpressions = new NSMutableArray();

      for (Enumeration enumerator = entityGroup.objectEnumerator();
          enumerator.hasMoreElements(); ) {
        EOEntity entity = (EOEntity) enumerator.nextElement();
        String tableName = entity.externalName();
        NSArray primaryKeyAttributes = entity.primaryKeyAttributes();
        boolean singlePrimaryKey = primaryKeyAttributes.count() == 1;
        if ((tableName != null) && (!"".equals(tableName)) && (primaryKeyAttributes.count() > 0)) {
          NSArray expressions = super.primaryKeyConstraintStatementsForEntityGroup(entityGroup);
          if ((expressions != null) && (expressions.count() > 0))
            primaryKeyConstraintExpressions.addObjectsFromArray(expressions);
          for (Enumeration attributeEnumerator = primaryKeyAttributes.objectEnumerator();
              attributeEnumerator.hasMoreElements(); ) {
            String columnName = ((EOAttribute) attributeEnumerator.nextElement()).columnName();
            columnNameDictionary.setObjectForKey(
                columnName, entity.externalName() + "." + columnName);
            EOSQLExpression expression =
                this._expressionForString(
                    "create "
                        + (singlePrimaryKey ? "unique" : "")
                        + " index "
                        + entity.externalName()
                        + " "
                        + columnName);
            if (expression != null) primaryKeyConstraintExpressions.addObject(expression);
          }
        }
      }

      for (Enumeration enumerator = entityGroup.objectEnumerator();
          enumerator.hasMoreElements(); ) {
        EOEntity entity = (EOEntity) enumerator.nextElement();
        String tableName = entity.externalName();
        if ((tableName != null) && (!"".equals(tableName))) {
          for (Enumeration relationshipEnumerator = entity.relationships().objectEnumerator();
              relationshipEnumerator.hasMoreElements(); ) {
            EORelationship relationship = (EORelationship) relationshipEnumerator.nextElement();
            if (!relationship.isFlattened()) {
              NSArray destinationAttributes = relationship.destinationAttributes();

              // First exclude all the destination entity primary keys
              for (Enumeration attributeEnumerator =
                      relationship.destinationEntity().primaryKeyAttributes().objectEnumerator();
                  attributeEnumerator.hasMoreElements(); ) {
                EOAttribute attribute = (EOAttribute) attributeEnumerator.nextElement();
                columnNameDictionary.setObjectForKey(
                    attribute.columnName(),
                    relationship.destinationEntity().externalName() + "." + attribute.columnName());
              }
              // Then deal with our end of things
              for (Enumeration attributeEnumerator =
                      relationship.sourceAttributes().objectEnumerator();
                  attributeEnumerator.hasMoreElements(); ) {
                EOAttribute attribute = (EOAttribute) attributeEnumerator.nextElement();
                if ((!this.isSinglePrimaryKeyAttribute(attribute))
                    && (columnNameDictionary.objectForKey(tableName + "." + attribute.columnName())
                        != null)) {
                  columnNameDictionary.setObjectForKey(
                      attribute.columnName(), tableName + "." + attribute.columnName());
                  EOSQLExpression expression =
                      this._expressionForString(
                          "create index " + tableName + " " + attribute.columnName());
                  if (expression != null) primaryKeyConstraintExpressions.addObject(expression);
                }
              }
              // Then deal with the other side
              if (entity.model() == relationship.destinationEntity().model()) {
                for (Enumeration attributeEnumerator =
                        relationship.destinationAttributes().objectEnumerator();
                    attributeEnumerator.hasMoreElements(); ) {
                  EOAttribute attribute = (EOAttribute) attributeEnumerator.nextElement();
                  String destinationTableName = relationship.destinationEntity().externalName();
                  if ((destinationTableName != null) && (!"".equals(destinationTableName))) {
                    if ((!this.isSinglePrimaryKeyAttribute(attribute))
                        && (columnNameDictionary.objectForKey(
                                destinationTableName + "." + attribute.columnName())
                            != null)) {
                      columnNameDictionary.setObjectForKey(
                          attribute.columnName(),
                          destinationTableName + "." + attribute.columnName());
                      EOSQLExpression expression =
                          this._expressionForString(
                              "create index "
                                  + destinationTableName
                                  + " "
                                  + attribute.columnName());
                      if (expression != null) primaryKeyConstraintExpressions.addObject(expression);
                    }
                    if ((!relationship.isCompound())
                        && (relationship.sourceAttributes().count() == 1)
                        && (relationship.destinationAttributes().count() == 1)) {
                      String semantics;
                      switch (relationship.joinSemantic()) {
                        case EORelationship.FullOuterJoin: // '\001'
                        case EORelationship.LeftOuterJoin: // '\002'
                        case EORelationship.RightOuterJoin: // '\003'
                          semantics = "*";
                          break;

                        default:
                          semantics = "=";
                          break;
                      }
                      String sourceColumn =
                          ((EOAttribute) relationship.sourceAttributes().objectAtIndex(0))
                              .columnName();
                      String destinationColumn =
                          ((EOAttribute) relationship.destinationAttributes().objectAtIndex(0))
                              .columnName();
                      EOSQLExpression expression =
                          this._expressionForString(
                              "delete from _SYS_RELATIONSHIP where relationshipName = '"
                                  + relationship.name()
                                  + "' and source_table = '"
                                  + tableName
                                  + "' ");
                      if (expression != null) primaryKeyConstraintExpressions.addObject(expression);
                      expression =
                          this._expressionForString(
                              "insert into _SYS_RELATIONSHIP (relationshipName, source_table, source_column, dest_table, dest_column, operator, one_to_many) values ('"
                                  + relationship.name()
                                  + "','"
                                  + tableName
                                  + "','"
                                  + sourceColumn
                                  + "','"
                                  + destinationTableName
                                  + "','"
                                  + destinationColumn
                                  + "','"
                                  + semantics
                                  + "',"
                                  + (relationship.isToMany() ? 1 : 0)
                                  + ")");
                      if (expression != null) primaryKeyConstraintExpressions.addObject(expression);
                    }
                  }
                }
              }
            }
          }
        }
      }
      return primaryKeyConstraintExpressions.immutableClone();
    }