org.assertj.db.api.navigation

Interface ToColumnFromChange<C extends ColumnAssert>

Type Parameters:

C - The class of a assertion on a column (an sub-class of ColumnAssert).

All Known Subinterfaces:

OriginWithColumnsAndRowsFromChange, OriginWithValuesFromColumn, OriginWithValuesFromRow

All Known Implementing Classes:

AbstractAssertWithOriginWithColumnsAndRowsFromChange, AbstractAssertWithValues, ChangeAssert, ChangeColumnAssert, ChangeColumnValueAssert, ChangeRowAssert, ChangeRowValueAssert

public interface ToColumnFromChange<C extends ColumnAssert>

Defines methods to navigate to a modified Column from a Change.

The different methods return an assertion on one column ColumnAssert.

These methods exists when navigating (at the beginning assertThat()) from changes.

The difference with ToColumn is that ToColumn allows to navigate in all the columns of a Change and the methods of ToColumnFromChange count only the columns with a modification between the start point and the end point.

As shown in the diagram below, it is possible to call the method to navigate to a ColumnAssert from :

• a change (ChangeAssert)
• a column of a change (ChangeColumnAssert)
• a value of a column of a change (ChangeColumnValueAssert)
• a row of a change (ChangeRowAssert)
• a value of a row of a change (ChangeRowValueAssert)

It is important to keep in mind that the methods are executed from the point of view of the last instance with assertion methods on a change (ChangeAssert).
So all the lines of code below are equivalent : they point on the column at index 1 (as usual, the list start at index 0) among the modified columns.

 
 assertThat(changes).change().columnAmongTheModifiedOnes(1)......;                                                    // Point directly on the column at index 1
 // Use the returnToOrigin() method of AbstractAssertWithOrigin to return on the change and access to the next/second column of the list
 assertThat(changes).change().columnAmongTheModifiedOnes().returnToOrigin().columnAmongTheModifiedOnes()......;
 assertThat(changes).change().columnAmongTheModifiedOnes().columnAmongTheModifiedOnes()......;                        // Same as precedent but returnToOrigin() is implicit
 assertThat(changes).change().column().columnAmongTheModifiedOnes(1)......;                                           // The method with the index can be call too
 assertThat(changes).change().columnAmongTheModifiedOnes(2).column(0).columnAmongTheModifiedOnes(1)......;            // Idem
 assertThat(changes).change().columnAmongTheModifiedOnes().value().columnAmongTheModifiedOnes()......;
 assertThat(changes).change().column().value().columnAmongTheModifiedOnes(1)......;
 // Equivalent to the precedent but with the use of the returnToOrigin() method of AbstractAssertWithOrigin
 assertThat(changes).change().columnAmongTheModifiedOnes().value().returnToOrigin().returnToOrigin().columnAmongTheModifiedOnes(1)......;
 
 

Author:

Régis Pouiller

Method Summary

Methods

Modifier and Type	Method and Description
C	columnAmongTheModifiedOnes() Returns assertion methods on the next Column in the list of the modified Columns.
C	columnAmongTheModifiedOnes(int index) Returns assertion methods on the Column at the index in parameter among the modified Columns.
C	columnAmongTheModifiedOnes(String columnName) Returns assertion methods on the Column corresponding to the column name in parameter among the modified Columns.

Method Detail

columnAmongTheModifiedOnes

C columnAmongTheModifiedOnes()

Returns assertion methods on the next Column in the list of the modified Columns.

Returns:

An object to make assertions on the Column.

Throws:

AssertJDBException - If there are no more Column among the list of modified Columns.

See Also:

ChangeAssert.columnAmongTheModifiedOnes(String), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(String), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(String), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(String), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(String)

columnAmongTheModifiedOnes

C columnAmongTheModifiedOnes(int index)

Returns assertion methods on the Column at the index in parameter among the modified Columns.

Parameters:

index - The index corresponding to the Column among the list of modified Columns..

Returns:

An object to make assertions on the Column.

Throws:

AssertJDBException - If the index is out of the bounds.

See Also:

ChangeAssert.columnAmongTheModifiedOnes(int), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(int), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(int), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(int), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(int)

columnAmongTheModifiedOnes

C columnAmongTheModifiedOnes(String columnName)

Returns assertion methods on the Column corresponding to the column name in parameter among the modified Columns.

Parameters:

columnName - The column name.

Returns:

An object to make assertions on the Column.

Throws:

NullPointerException - If the column name in parameter is null.

AssertJDBException - If there is no column with this name among the list of modified Columns.

See Also:

ChangeAssert.columnAmongTheModifiedOnes(String), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(String), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(String), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(String), AbstractAssertWithOriginWithColumnsAndRowsFromChange.columnAmongTheModifiedOnes(String)