Expert Entry
Expert Entry
All settings of the advanced search and some further additional special settings can also be entered directly into the search via the search string. As the syntax is very extensive because of the great number of search methods, it is meant for experts in particular.
Boolean operators
The individual search terms can be linked via Boolean operators. The following operators are available:
AND: All the words have to be in the document. It is the standard if no operator is given. (Note: instead of AND the symbol && can be used)
For example: ‚water fish’ equates to ‚water AND fish’ or ‚water && fish’
OR: One of the words has to be in the document. (Note: instead of OR the symbol || can be used)
Example:
‚water OR fish’ equates to
‚water || fish’
NOT: The word after NOT must not be in the document. (Hint: instead of NOT the symbol ! or the symbol l - can be used)
Example: ‚water NOT
fish’ (the search is for water but not fish)
Grouping (bracketing)
The individual search terms linked by Boolean operators can be optionally grouped by bracketing (round brackets).
Example: ‚fish NOT (trout OR perch)’ (all documents are found that contain the term ‚fish’ but not the terms ‚trout’ and ‚perch’)
Search for word groups
If a string is placed in quotation marks („) then the occurrence of the whole string is sought and not the occurrence of the individual terms..
Example: „The fish swims in the water“ (Only texts are found that contain exactly this string.)
Wild cards
Within a search term it is possible to enter wild cards for one (?) or more (*) optional signs. All terms are then found that match the rest of the search term whereby one or more signs can appear for the wild card.
Example: ‚te?t’ (Not only documents with the term‚text’ but also documents with the term ‚test’ will be found)
Example: ‚environment*catalogue’ ((not only documents with the term ‚environment data catalogue’ will be found but also documents with the term ‚environment object catalogue’ )
Search for areas of symbols
It is possible to search for areas of symbols. The areas are collected in square [] or curved {} brackets and the bottom and top pieces of information are linked with the operator TO. Square brackets[] signify that the lower and upper value of the area are included in the search. Curved brackets {} signify that the lower and the upper value of the area are not included in the search.
Example: ‚[Aller TO Elbe]’ (Documents are sought that contain words that begin with all in the alphabet and end at Elbe. The words ‚Aller’ and ‚Elbe’ are included in the search area by this.
Example: ‚{Aller TO Elbe}’ (Documents are sought that contain words starting alphabetically with Aller and ending at Elbe. The words ‚Aller’ and ‚Elbe’ are not contained in the search area in this.)
The search area can also be given inside a search word.
Example: ‚te[i TO x]t’ (Documents are searched for that contain, for example, the words ‚teilt’, ‚test’ or ‚text’.)
As an alternative to the operator TO a hyphen - can also be used
Example: ‚te[i - x]t’ (documents are searched for that, for example, contain the words ‚tent’, ‚test’ or ‚text’.)
Fuzzy search
Documents are also found via the fuzzy search in which terms with similar spelling are found. The fuzzy search is instigated by attaching a tilde (~) to the search term.
Example: ‚Corn~’ (documents will be found containing the term‚horn’ for example)
Special symbols
The following symbols have a special significance in the search string (e.g. in the form of operators):
+ - && || ! ( ) { } [ ] ^ " ~ * ? : \
SShould you however use them as simple symbols within a search term then they must be marked as such by the symbol \ (Backslash).
Example: ‚\(1\+1\)\:2’ (The expression ‚(1+1):2’ is sought)
Search for special document types
In InGrid-Portal different document types can be searched for. For this the syntax ‚fileformat:value’ is used.
Example: ‚fileformat:pdf’ (only PDF documents are searched for.)
The following values are available for the 'fileformat' field in InGrid-Portal:
| Value | Description |
| Only PDF documents are searched for | |
| rtf | Only RTF documents are searched for |
| msword | Only MS Word documents are searched for |
| msexcel | Only MS Excel documents are searched for |
| mspowerpoint | Only MS PowerPoint documents are searched for |
Search for special datatypes
The InGrid-Portal full text index is organized in different fields. All fields used in InGrid-Portal can be searched individually in targeted fashion. For this the syntax ‚field name:value’ is used.
In searching for a data type the field name is ‚datatype’.
Example: ‚datatype:law’ (documents are searched for that are arranged under legislation.)
The following values are available for the datatype field in InGrid-Portal:
| Value | Description |
| www | Web pages are being sought |
| default | Documents from the environment information area are searched for |
| research | Documents from the research projects area are searched for |
| address | Documents from the addresses area are searched for |
| topics | Documents from the environment topics area are searched for |
| service | Documents from the service area are searched for |
| measure | Documents from the measurement values (data) are searched for |
| metadata | Metadata are searched for |
| fis | Information from the specialist databases is being sought |
Search for a particular environmental topic
The search can be limited to pages associated with one or more environmental topics. For this the syntax ‚topic:value’ is used.
Example: ‚datatype:topics topic:energy’ (documents are searched for that are arranged under the environmental topic Energy eingeordnet wurden.)
The following values are possible:
Abfall, Altlasten, Bauen, Boden, Chemikalien, Energie, Forstwirtschaft, Gentechnik, Geologie, Gesundheit, LaermErschuetterung, Landwirtschaft, LuftKlima, NachhaltigeEntwicklung, NaturLandschaft, Strahlung, Tierschutz, Umweltinformation, Umweltwirtschaft, Verkehr, Wasser
Search for particular measurement pages (data)
The search can be restricted to the pages, which are associated with measurements in particular environmental areas. For this the syntax‚topic:value’ is used.
Example: ‚datatype:measure topic:air’ (Documents are searched for that have as contents measurements on the topic Air.)
The following values are possible:
radiation, air, water, misc
Search for a particular service
The search can be restricted to the pages, which are associated with a service. For this the syntax‚topic:value’ is used.
Example: ‚datatype:service topic:press’ (Documents containing press releases are searched for.)
The following values are possible:
press, publication, event
Search for a particular metadata class (data)
In searching for a particular metadata class the syntax ‚topic:Wert’ is searched for.
Example: ‚datatype:metadata metaclass:map’ (metadata of the Geo-Information/Map class are being searched for.)
The following values are available for the metaclass field in InGrid-Portal:
| Value | Description |
| job | Metadata of the class Organisational Unit / Task are being looked for |
| map | Metadata of the class Geo-Information / Map are being looked for |
| document | Metadata of the class Document / Report / Literature are being looked for |
| geoservice | Metadata of the class Geo-Service are being looked for |
| project | Metadata of the class Enterprise / Project / Program are being looked for |
| database | Metadata of the class Data Pooling / Data Base are being looked for |
| service | Metadata of the class 'Service / Application / Information System' are being looked for |
Stating the spatial reference
The search can be restricted to documents that are associated with a certain spatial reference. The spatial reference can be stated via coordinates or via the area key of the administrative unit.
Example: ‚areaid: areaid:11000000’ (The search will be restricted to Berlin as administrative unit.)
Example: ‚x1:7.52 y1:50.18 x2:10.17 y2:52.73’ (The search is restricted to a selected rectangle.)
The following fields are available in InGrid-Portal for the restriction of the spatial reference:
| Field | Description of the Value |
| areaid | Key of the administrative unit (AGS) |
| x1 | left |
| x2 | right |
| y1 | up |
| y2 | down |
The coordinates have to be entered as degrees (WGS 84).
Stating the temporal reference
The search can be restricted to documents that are associated with a particular temporal reference.
Example: ‚t1:2006-01-01 t2:2008-12-31’ (The search is restricted to a selected time interval.)
The following fields are available for the restriction of the temporal references in InGrid-Portal:
| Field | Description of the Value |
| t0 | The document was associated with the time point stated |
| t1 | The document was associated with a time span that begins with the value stated |
| t2 | The document was associated with a time span that ends with the value stated |
The times stated must always be entered in the form YYYY-MM-DD (Y=year, M=month, D=day).