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ABAP_MESH - Mesh Path Expressions
ABAP_SYNTAX ... mesh_path ...
What does it do? Specifies a mesh path mesh_path as a standalone mesh path expression at an operand position. The result of a mesh path expression is a line from the last path node of the mesh path described by the result of the mesh path and has the corresponding line type. In the square brackets [ ... ] of each mesh association, an additional condition can be specified using col1 = ... col2 = .... If a path node contains multiple lines that fit the description, the first line found is read. A mesh path expression is a special type of table expression and can be used in the same way as a table expression:
Possible operand positions are all read and write positions listed for table expressions. In a write position, key fields of primary or secondary table keys of the last path node must not be overwritten.
VALUE and REF can be used to control how the result is passed as in regular table expressions.
A chaining with the structure component selector (-) can be used to access a component of the read line. If the follow-on node does not contain any lines that meet the condition in the square brackets [ ... ], the response is the same as in regular table expressions. In other words, the exception CX_SY_ITAB_LINE_NOT_FOUND is raised, except when used in the statement ASSIGN, in the predicate function line_exists, or in the table function line_index.
Latest notes: Since the lines of a mesh node cannot have tabular components, a mesh path expression cannot have any chainings to other table expressions. NON_V5_HINTS ABAP_HINT_END
