CouchConf-NYC-Advanced-document-design

Advanced Document DesignAlan McKean

SCHEMA‐LESS DATABASE 2

SCHEMA‐LESS DATABASEDocument structure comes into play  but at the query level, not at the entry level 2

SCHEMA‐LESS DATABASEDocument structure comes into play  but at the query level, not at the entry level Ad hoc data store  no need to deﬁne schema before adding data 2

SCHEMA‐LESS DATABASEDocument structure comes into play  but at the query level, not at the entry level Ad hoc data store  no need to deﬁne schema before adding databut you can limit the chaos of schema‐less data 2

“SCHEMA” ENFORCEMENT TOOLS 3

VALIDATE_DOC_UPDATE 4

VALIDATE_DOC_UPDATE“validate_doc_update”: “funcCon(newDoc, oldDoc, userCtx, secObj) { ... } 4

VALIDATE_DOC_UPDATE“validate_doc_update”: incoming JSON document “funcCon(newDoc, oldDoc, userCtx, secObj) { ... } 4

VALIDATE_DOC_UPDATE“validate_doc_update”: incoming JSON document “funcCon(newDoc, oldDoc, userCtx, secObj) { ... exisCng document (loaded from on disk) } 4

VALIDATE_DOC_UPDATE“validate_doc_update”: incoming JSON document current user’s informaCon from _users “funcCon(newDoc, oldDoc, userCtx, secObj) { ... exisCng document (loaded from on disk) } 4

VALIDATE_DOC_UPDATE“validate_doc_update”: incoming JSON document current user’s informaCon from _users “funcCon(newDoc, oldDoc, userCtx, secObj) { ... exisCng document (loaded from on disk) _security seSngs for this DB } 4

VALIDATE_DOC_UPDATE 5

VALIDATE_DOC_UPDATEOpConally‐enforced schema 5

VALIDATE_DOC_UPDATEOpConally‐enforced schemaThrow ‘forbidden’ or ‘unauthorized’ to prevent save 5

VALIDATE_DOC_UPDATEOpConally‐enforced schemaThrow ‘forbidden’ or ‘unauthorized’ to prevent saveCannot modify newDoc 5

VALIDATE_DOC_UPDATEOpConally‐enforced schemaThrow ‘forbidden’ or ‘unauthorized’ to prevent saveCannot modify newDocCan enforce ﬁeld types, values 5

VALIDATE_DOC_UPDATEOpConally‐enforced schemaThrow ‘forbidden’ or ‘unauthorized’ to prevent saveCannot modify newDocCan enforce ﬁeld types, valuesCan prevent docs or ﬁelds from being updated again 5

VALIDATE_DOC_UPDATEOpConally‐enforced schemaThrow ‘forbidden’ or ‘unauthorized’ to prevent saveCannot modify newDocCan enforce ﬁeld types, valuesCan prevent docs or ﬁelds from being updated again(created_at, user) 5

VALIDATE_DOC_UPDATEOpConally‐enforced schemaThrow ‘forbidden’ or ‘unauthorized’ to prevent saveCannot modify newDocCan enforce ﬁeld types, valuesCan prevent docs or ﬁelds from being updated again(created_at, user)Runs every Cme a document is updated 5

VALIDATE_DOC_UPDATE OpConally‐enforced schema Throw ‘forbidden’ or ‘unauthorized’ to prevent save Cannot modify newDoc Can enforce ﬁeld types, values Can prevent docs or ﬁelds from being updated again (created_at, user) Runs every Cme a document is updated Even during replicaCon and bulk operaCons 5

“VALIDATE_DOC_UPDATE” 6

“VALIDATE_DOC_UPDATE”“validate_doc_update”: “funcCon(newDoc, oldDoc, userCtx, secObj) { if(oldDoc && toJSON(oldDoc[field]) != toJSON(newDoc[field])) { throw({forbidden:”Field can’t be changed: “ + field}); } if(!newDoc.address) { throw({forbidden: “Document must have and address”}); } } 6

“VALIDATE_DOC_UPDATE”“validate_doc_update”: “funcCon(newDoc, oldDoc, userCtx, secObj) { oldDoc exists if(oldDoc && toJSON(oldDoc[field]) != toJSON(newDoc[field])) { throw({forbidden:”Field can’t be changed: “ + field}); } if(!newDoc.address) { throw({forbidden: “Document must have and address”}); } } 6

“VALIDATE_DOC_UPDATE”“validate_doc_update”: “funcCon(newDoc, oldDoc, userCtx, secObj) { oldDoc has the field if(oldDoc && toJSON(oldDoc[field]) != toJSON(newDoc[field])) { throw({forbidden:”Field can’t be changed: “ + field}); } if(!newDoc.address) { throw({forbidden: “Document must have and address”}); } } 6

“VALIDATE_DOC_UPDATE”“validate_doc_update”: “funcCon(newDoc, oldDoc, userCtx, secObj) { it’s different than newDoc’s field if(oldDoc && toJSON(oldDoc[field]) != toJSON(newDoc[field])) { throw({forbidden:”Field can’t be changed: “ + field}); } if(!newDoc.address) { throw({forbidden: “Document must have and address”}); } } 6

“VALIDATE_DOC_UPDATE”“validate_doc_update”: “funcCon(newDoc, oldDoc, userCtx, secObj) { if(oldDoc && toJSON(oldDoc[field]) != toJSON(newDoc[field])) { throw either forbidden or unauthorized throw({forbidden:”Field can’t be changed: “ + field}); } if(!newDoc.address) { throw({forbidden: “Document must have and address”}); } } 6

“VALIDATE_DOC_UPDATE”“validate_doc_update”: “funcCon(newDoc, oldDoc, userCtx, secObj) { if(oldDoc && toJSON(oldDoc[field]) != toJSON(newDoc[field])) { throw({forbidden:”Field can’t be changed: “ + field}); } newDoc doesn’t have an address property if(!newDoc.address) { throw({forbidden: “Document must have and address”}); } } 6

_UPDATE HANDLERS 7

_UPDATE HANDLERSAugment CouchDB’s API with your own endpoints 7

_UPDATE HANDLERSAugment CouchDB’s API with your own endpointsPUT /{db}/_design/{app}/_update/{funcCon}/{_id} 7

_UPDATE HANDLERSAugment CouchDB’s API with your own endpointsPUT /{db}/_design/{app}/_update/{funcCon}/{_id}POST /{db}/_design/{app}/_update/{funcCon} 7

_UPDATE HANDLERSAugment CouchDB’s API with your own endpointsPUT /{db}/_design/{app}/_update/{funcCon}/{_id}POST /{db}/_design/{app}/_update/{funcCon}Content can be of any Content‐Type/mime‐type XML, KML ( commined doc must be JSON) 7

_UPDATE HANDLERSAugment CouchDB’s API with your own endpointsPUT /{db}/_design/{app}/_update/{funcCon}/{_id}POST /{db}/_design/{app}/_update/{funcCon}Content can be of any Content‐Type/mime‐type XML, KML ( commined doc must be JSON)Can be used for ﬁeld‐atomic updates 7

_UPDATE HANDLERSAugment CouchDB’s API with your own endpointsPUT /{db}/_design/{app}/_update/{funcCon}/{_id}POST /{db}/_design/{app}/_update/{funcCon}Content can be of any Content‐Type/mime‐type XML, KML ( commined doc must be JSON)Can be used for ﬁeld‐atomic updatesuserCtx object holds authenCcated user data 7

_UPDATE HANDLERSAugment CouchDB’s API with your own endpointsPUT /{db}/_design/{app}/_update/{funcCon}/{_id}POST /{db}/_design/{app}/_update/{funcCon}Content can be of any Content‐Type/mime‐type XML, KML ( commined doc must be JSON)Can be used for ﬁeld‐atomic updatesuserCtx object holds authenCcated user dataCAUTION: replicaCon and bulk operaCons don’t use this,so don’t depend on it for your solesource of schema enforcement input 7

_UPDATE HANDLERSfuncCon(doc, req) { if (!doc) { if (req.id) { doc = JSON.parse(req.body); doc._id = req.id; } }    for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed];} 8

_UPDATE HANDLERSno exisCng doc on disk for the requested “id” ... it’s a new document funcCon(doc, req) { if (!doc) { if (req.id) { doc = JSON.parse(req.body); doc._id = req.id; } }     for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )       var newProp = prop.replace(/^s*/, ).replace(/s*$/,  ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed]; } 8

_UPDATE HANDLERSfuncCon(doc, req) { there’s an “id” in the request if (!doc) { if (req.id) { doc = JSON.parse(req.body); doc._id = req.id; } }    for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed];} 8

_UPDATE HANDLERSfuncCon(doc, req) { if (!doc) { if (req.id) { get the document from the request body doc = JSON.parse(req.body); doc._id = req.id; } }    for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed];} 8

_UPDATE HANDLERSfuncCon(doc, req) { if (!doc) { if (req.id) { doc = JSON.parse(req.body); assign it the id from the request doc._id = req.id; } }    for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed];} 8

_UPDATE HANDLERSfuncCon(doc, req) { if (!doc) { if (req.id) { doc = JSON.parse(req.body); doc._id = req.id; } process every property in the document }    for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed];} 8

_UPDATE HANDLERSfuncCon(doc, req) { if (!doc) { if (req.id) { doc = JSON.parse(req.body); doc._id = req.id; } } trim leading and trailing blanks from property value    for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed];} 8

_UPDATE HANDLERSfuncCon(doc, req) { if (!doc) { if (req.id) { doc = JSON.parse(req.body); doc._id = req.id; } }    for(prop in doc) { trim leading and trailing blanks from property name and make lowercase var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed];} 8

_UPDATE HANDLERSfuncCon(doc, req) { if (!doc) { if (req.id) { doc = JSON.parse(req.body); doc._id = req.id; } }    for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; doc will be commined } return [doc, SaniCzed];} 8

_UPDATE HANDLERSfuncCon(doc, req) { if (!doc) { if (req.id) { doc = JSON.parse(req.body); doc._id = req.id; } }    for(prop in doc) { var v = doc[prop].replace(/^s*/, ).replace(/s*$/, )      var newProp = prop.replace(/^s*/, ).replace(/s*$/, ).replace(/ /g,"_").toLowerCase(); delete doc[prop]; doc[newProp] = v; } return [doc, SaniCzed];} message is returned to the caller 8

QUERYING 9

VIEW COLLATION 10

VIEW COLLATIONMapReduce emits keys and values 10

VIEW COLLATIONMapReduce emits keys and valuesDicConary sorCng of those keys can provide structure Unicode CollaCon Algorithm 10

VIEW COLLATIONMapReduce emits keys and valuesDicConary sorCng of those keys can provide structure Unicode CollaCon AlgorithmCan be used to group related documents 10

VIEW COLLATIONMapReduce emits keys and valuesDicConary sorCng of those keys can provide structure Unicode CollaCon AlgorithmCan be used to group related documents Emit related data + ordering component {“key”: [doc.took_oﬃce], “value”: doc.name} {“key”: [doc.year, 1], “value”: doc.event} 10

VIEW COLLATION"views": { "president_events": "funcCon(doc) { if (doc.type == "president") { emit([doc.took_oﬃce], doc.name); } else if (doc.type == "event") { emit([doc.year, 0], doc.event); } }} 11

VIEW COLLATION can be used to group related documents"views": { "president_events": "funcCon(doc) { if (doc.type == "president") { emit([doc.took_oﬃce], doc.name); } else if (doc.type == "event") { emit([doc.year, 0], doc.event); } }} 11

VIEW COLLATION can be used to group related documents"views": { "president_events": "funcCon(doc) { e.g., emit([1981], “Ronald Reagan”) if (doc.type == "president") { emit([doc.took_oﬃce], doc.name); } else if (doc.type == "event") { emit([doc.year, 0], doc.event); } }} 11

VIEW COLLATION can be used to group related documents"views": { "president_events": "funcCon(doc) { if (doc.type == "president") { emit([doc.took_oﬃce], doc.name); e.g., emit([1981, 0], "MTV signs on, becoming the ﬁrst 24‐ hour cable network dedicated to airing music videos.") } else if (doc.type == "event") { emit([doc.year, 0], doc.event); } }} 11

VIEW COLLATION can be used to group related documents"views": { "president_events": "funcCon(doc) { if (doc.type == "president") { emit([doc.took_oﬃce], doc.name); } else if (doc.type == "event") { emit([doc.year, 0], doc.event); } e.g., emit([1981, 0], "The Space Shunle Columbia is  } launched, marking America"s ﬁrst return to space since 1975")} 11

VIEW COLLATION can be used to group related documents"views": { "president_events": "funcCon(doc) { if (doc.type == "president") { emit([doc.took_oﬃce], doc.name); } else if (doc.type == "event") { emit([doc.year, 0], doc.event); } }} 11

RESULT OF COLLATION |[1980, 0], "Mount St. Helens erupCon in Washington kills 57")[1980, 0], "John Lennon Assassinated")[1981], “Ronald Reagan”[1981, 0], "MTV signs on, becoming the ﬁrst 24‐hour cable network dedicated to airing music videos.")[1981, 0], "The Space Shunle Columbia is launched, marking America"s ﬁrst return to space since 1975") | 12

UNICODE COLLATION ALGORITHM 13

UNICODE COLLATION ALGORITHMIt’s not ASCII order! All symbols sort before numbers and leners  (even the "high" symbols like Clde, 0x7e) 13

UNICODE COLLATION ALGORITHMIt’s not ASCII order! All symbols sort before numbers and leners  (even the "high" symbols like Clde, 0x7e) Diﬀering sequences of leners are compared without  regard to case, so a < aa but also A < aa and a < AA 13

UNICODE COLLATION ALGORITHMIt’s not ASCII order! All symbols sort before numbers and leners  (even the "high" symbols like Clde, 0x7e) Diﬀering sequences of leners are compared without  regard to case, so a < aa but also A < aa and a < AA IdenCcal sequences of leners are compared with regard  to case, with lowercase before uppercase, so a < A 13

UNICODE COLLATION ALGORITHMIt’s not ASCII order! All symbols sort before numbers and leners  (even the "high" symbols like Clde, 0x7e) Diﬀering sequences of leners are compared without  regard to case, so a < aa but also A < aa and a < AA IdenCcal sequences of leners are compared with regard  to case, with lowercase before uppercase, so a < ALike this...` ^ _ ‐ , ; : ! ? .  " ( ) [ ] { } @ * /  & # % + < = > | ~ $ 0 1 2 3 4 5 6 7 8 9 a A b B c C d D e E f F g G h H i I j J k K l L m M n N o O p P q Q r R s S t T u U v V w W x X y Y z Z 13

VIEW COLLATION 14

VIEW COLLATION?include_docs=true super handy for “joining” MapReduce results 14

VIEW COLLATION?include_docs=true super handy for “joining” MapReduce results can help you “accept” using mulCple, smaller docs 14

VIEW COLLATION?include_docs=true super handy for “joining” MapReduce results can help you “accept” using mulCple, smaller docsReference related documents by their “_id” in a “parent” document 14

VIEW COLLATION?include_docs=true super handy for “joining” MapReduce results can help you “accept” using mulCple, smaller docsReference related documents by their “_id” in a “parent” documentEmit the referenced “_id” in the value of an emit {“value”: {“_id”: “referenced‐id”}} 14

VIEW COLLATION?include_docs=true super handy for “joining” MapReduce results can help you “accept” using mulCple, smaller docsReference related documents by their “_id” in a “parent” documentEmit the referenced “_id” in the value of an emit {“value”: {“_id”: “referenced‐id”}}a “doc” key is added to the resultsexample of this coming shortly... 14

MORE TOOLSoutput funcCons 15

MORE TOOLS output funcCons_show/{show_funcCon_name}/{doc_id} runs a single doc through an addiConal “display” funcCon 15

MORE TOOLS output funcCons_show/{show_funcCon_name}/{doc_id} runs a single doc through an addiConal “display” funcCon_list/{list_funcCon_name}/{view_name} same as _show, but for map/reduce results 15

_LIST 16

_LIST/{db}/_design/{app}/_list/{list_fun}/{view_fun} runs the results of {view_fun} through {list_fun} 16

_LIST/{db}/_design/{app}/_list/{list_fun}/{view_fun} runs the results of {view_fun} through {list_fun} can return any Content‐Type 16

_LIST/{db}/_design/{app}/_list/{list_fun}/{view_fun} runs the results of {view_fun} through {list_fun} can return any Content‐Type great for combining a chunk of collated results 16

_LIST/{db}/_design/{app}/_list/{list_fun}/{view_fun} runs the results of {view_fun} through {list_fun} can return any Content‐Type great for combining a chunk of collated results use startkey/endkey to limit map output 16

BASIC LIST FUNCTION"lists": { "foo": "funcCon(head, req) { { var row; start({ "headers": { "Content‐Type": "text/html" } emit([doc.year, 0], doc.event); }); while(row = getRow()) { send(row.value); } }} 17

BASIC LIST FUNCTION"lists": { "foo": "funcCon(head, req) { { begins HTTP output var row; start({ "headers": { "Content‐Type": "text/html" } emit([doc.year, 0], doc.event); }); while(row = getRow()) { send(row.value); } }} 17

BASIC LIST FUNCTION"lists": { "foo": "funcCon(head, req) { { var row; start({ "headers": { "Content‐Type": "text/html" } emit([doc.year, 0], doc.event); retrieves a row from the MapReduce results }); while(row = getRow()) { send(row.value); } }} 17

BASIC LIST FUNCTION"lists": { "foo": "funcCon(head, req) { { var row; start({ "headers": { "Content‐Type": "text/html" } emit([doc.year, 0], doc.event); }); while(row = getRow()) { send(row.value); } sends line into HTTP stream }} 17

BASIC LIST FUNCTION"lists": { "foo": "funcCon(head, req) { { var row; start({ "headers": { "Content‐Type": "text/html" } emit([doc.year, 0], doc.event); }); while(row = getRow()) { send(row.value); } }} 17

PUTTING IT ALL TOGETHER 18

BLUEINK PAGE page document page items 1 2 page area page area content item1 1 “Welcome” content item “Logging In”2 content item “Benjamin Young” 20

BLUEINK 21

BLUEINK“page” docs reference content and template docs 21

BLUEINK“page” docs reference content and template docsMapReduce aggregates... general page and page layout data 21

BLUEINK“page” docs reference content and template docsMapReduce aggregates... general page and page layout data site wide seSngs 21

BLUEINK“page” docs reference content and template docsMapReduce aggregates... general page and page layout data site wide seSngs the chosen template 21

BLUEINK“page” docs reference content and template docsMapReduce aggregates... general page and page layout data site wide seSngs the chosen template and the page’s content items 21

BLUEINK“page” docs reference content and template docsMapReduce aggregates... general page and page layout data site wide seSngs the chosen template and the page’s content itemsa _list funcCon... applies the template 21

BLUEINK“page” docs reference content and template docsMapReduce aggregates... general page and page layout data site wide seSngs the chosen template and the page’s content itemsa _list funcCon... applies the template and builds the ﬁnal page 21

BLUEINK 22

BLUEINKcontent item docs (“text”, “blogs”, “calendars”, etc.) use CouchDB‐generated UUIDs 22

BLUEINKcontent item docs (“text”, “blogs”, “calendars”, etc.) use CouchDB‐generated UUIDs hold content separately from page docs 22

BLUEINKcontent item docs (“text”, “blogs”, “calendars”, etc.) use CouchDB‐generated UUIDs hold content separately from page docs allows independent updates 22

BLUEINKcontent item docs (“text”, “blogs”, “calendars”, etc.) use CouchDB‐generated UUIDs hold content separately from page docs allows independent updates far fewer conﬂicts if not embedded in page 22

BLUEINKcontent item docs (“text”, “blogs”, “calendars”, etc.) use CouchDB‐generated UUIDs hold content separately from page docs allows independent updates far fewer conﬂicts if not embedded in page content can be shared/reused among pages 22

BLUEINK 23

BLUEINKsite and template docs use user‐deﬁned document IDs 23

BLUEINKsite and template docs use user‐deﬁned document IDs site ‐ contains general site info (copyright, Ctle) 23

BLUEINKsite and template docs use user‐deﬁned document IDs site ‐ contains general site info (copyright, Ctle) template ‐ raw Mustache template for page rendering 23

BLUEINKsite and template docs use user‐deﬁned document IDs site ‐ contains general site info (copyright, Ctle) template ‐ raw Mustache template for page rendering sent back as HTML; all in one GET 23

PAGE ITEMS{ [[ 11 {"_id": "8dd982de76e8b5959e10e6d4360067ce", "display_Ctle": true}2 {"_id": "13a54b6e52123745cced243d620003e0", "display_Ctle": false},],[  21 {"_id": "90cb972de2a11045be18a3a88c001bad", "display_Ctle": true} ]] } 24

PAGE ITEMS{ [ page document[ 1 page items1 {"_id": "8dd982de76e8b5959e10e6d4360067ce", "display_Ctle": true} 1 22 {"_id": "13a54b6e52123745cced243d620003e0", "display_Ctle": false}, page area page area], content item 1 1 “Welcome”[  2 content item “Logging In”1 {"_id": "90cb972de2a11045be18a3a88c001bad", "display_Ctle": true}  content item 2] “Benjamin Young”] } 24

PAGE ITEMS{ [[ 11 {"_id": "8dd982de76e8b5959e10e6d4360067ce", "display_Ctle": true}2 {"_id": "13a54b6e52123745cced243d620003e0", "display_Ctle": false},],[  21 {"_id": "90cb972de2a11045be18a3a88c001bad", "display_Ctle": true} ]] } 24

“HTML” ITEM DOC{ "_id": "8dd982de76e8b5959e10e6d43600615d",  "_rev": "174‐aa7546e6308324d4b3ad84469fcbd773",  "type": "html",  "created": "2008‐06‐18 15:03:45",  "updated": "2009‐08‐08 13:28:58",  "Ctle": "Welcome",  "content": "The <a href="hnp://blueinkcms.com/">BlueInk Content Management System (CMS)</a> gives clients hassle‐free control over their content. Through a simple interface youll be able to edit and organize text, photos, contact informaCon, and other components‐all while looking right at your website! The so‹ware is easy to learn, but dont take our word for it‐sign up for a <a href="hnp://demo.blueinkcms.com/">free demo</a>!"} 25

“HTML” ITEM DOC ﬁrst referenced content item in ﬁrst page area{ "_id": "8dd982de76e8b5959e10e6d43600615d",  "_rev": "174‐aa7546e6308324d4b3ad84469fcbd773",  "type": "html",  "created": "2008‐06‐18 15:03:45",  "updated": "2009‐08‐08 13:28:58",  "Ctle": "Welcome",  "content": "The <a href="hnp://blueinkcms.com/">BlueInk Content Management System (CMS)</a> gives clients hassle‐free control over their content. Through a simple interface youll be able to edit and organize text, photos, contact informaCon, and other components‐all while looking right at your website! The so‹ware is easy to learn, but dont take our word for it‐sign up for a <a href="hnp://demo.blueinkcms.com/">free demo</a>!"} 25

“HTML” ITEM DOC{ "_id": "8dd982de76e8b5959e10e6d43600615d",  "_rev": "174‐aa7546e6308324d4b3ad84469fcbd773",  "type": "html",  "created": "2008‐06‐18 15:03:45",  "updated": "2009‐08‐08 13:28:58",  "Ctle": "Welcome",  "content": "The <a href="hnp://blueinkcms.com/">BlueInk Content Management System (CMS)</a> gives clients hassle‐free control over their content. Through a simple interface youll be able to edit and organize text, photos, contact informaCon, and other components‐all while looking right at your website! The so‹ware is easy to learn, but dont take our word for it‐sign up for a <a href="hnp://demo.blueinkcms.com/">free demo</a>!"} 25

MAP/REDUCE OUTPUT 26

MAP/REDUCE OUTPUTroute to page 26

MAP/REDUCE OUTPUTsorCng tools for special documents 26

MAP/REDUCE OUTPUTincluding the page 26

MAP/REDUCE OUTPUTsorCng for item in ﬁrst column 26

MAP/REDUCE OUTPUTsorCng for item in second column 26

MAP/REDUCE OUTPUT doc ids are used by  include_docs to bring along the  page content/template, etc. 26

GETTING THE ABOUT PAGE 27

GETTING THE ABOUT PAGE db name/site‐com/_design/blueink/_list/page/page_and_items ?start_key=[“about”] &end_key=[“about”, {}, {}] &include_docs=true 27

GETTING THE ABOUT PAGE/site‐com/_design/blueink/_list/page/page_and_items ?start_key=[“about”] &end_key=[“about”, {}, {}] &include_docs=true“page” list funcCon receives output from “page_and_items” view narrowed by the “start_key” and “end_key” with “include_docs=true” to make it all work 27

THE END 28

CouchConf-NYC-Advanced-document-design

by Couchbase on Oct 27, 2011

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CouchConf-NYC-Advanced-document-design Presentation Transcript