What does it do? The statement tt:read-write is a short form of the following two statements: < tt:read var='variable' $[type='type' $[length='len'$] $[decimals='dec'$]$] $[map='...'$] $[minLength$|maxLength='len'$] $[xsd-type...$] /> < tt:write var='variable' $[map='...'$] $[minLength$|maxLength='len'$] $[xsd-type...$] /> Specifying tt:read-write has the same effect as the statements tt:read and tt:read listed one directly after the other. The attribute type and the attributes length and decimals specified using this attribute are respected by tt:read only. As with tt:read, the attribute length can only be specified together with type.
ABAP_EXAMPLE_VX5 Serialization and Deserialization. In serializations, the variable VARI is assigned the values of the data object bound to ROOT and is written to XML using read-write. In deserializations, the value of the variable is read from XML and assigned to the data object bound to ROOT. The following example can be found as DEMO_ST_READ_WRITE. TRNS DEMO_ST_READ_WRITE The following ABAP program can call the transformation: ABEXA 01715 The result of the serialization is: < X > abcde < /X> The transformation is not symmetrical, due to minLength. After deserialization, the string str has at least 10 places. ABAP_EXAMPLE_END
