query.json

/* vim: set softtabstop=4 shiftwidth=4 expandtab
 * vim: set filetype=js
 */

// Keyword query

{
    "class": "Show",
    "firstResult": 0,
    "maxResults": 20,
    "query": {
        "keyword": {
            "fields": [
                {
                    "name": "event.name",
                    "boost": 1,
                    "ignoreAnalyzer": true,
                    "ignoreFieldBridge": true
                },
                {
                    "name": "event.description"
                }
            ],
            "matching": "Decade"
        },
        "boost": 2,
        "constantScore": true,
        "filter": "TODO?"
    }
}

// fuzzy
{
    "class": "Show",
    "overrides": [
        { "field": "event.name", "analyzerName": "ngram" }
    ],
    "query": {
        "keyword": {
            "fuzzy": {
                "threshold": 0.8,
                "prefixLength": 1
            },
            /* can we support "fields": [ "event.description", "event.name" ], */
            "fields": [
                {
                    "name": "event.description"
                }
            ],
            "matching": "Decade"
        }
    }
}

// wildcard
{
    "class": "Show",
    "query": {
        "keyword": {
            "wildcard": true,
            // should it be "field": "event.description",
            "field": {
                "name": "event.description",
                "boost": 3
            },
            "matching": "Deca*"
        }
    }
}

// Boolean query
{
    "class": "Show",
    "query" : {
        "bool": [
            {
                "type": "should",
                "query" : {
                    "keyword": {
                        "fuzzy": {
                            "threshold": 0.8,
                            "prefixLength": 1
                        },
                        "field": "event.name",
                        "matching": "Decade"
                    }
                }
            },
            {
                "type": "must",
                "negate": true, //or should it be "type": "must_not",
                "query" : { ... }
            }
        ]
    }
}

// all (except)
{
    "class": "Show",
    "query" : {
        "all": {
            "except": [
                { "keyword": {"field": "event.name", "matching": "Decade"} }
            ]
        }
    }
}
{
    "class": "Show",
    "query": {
        "all": {} //meh
    }
}

// Range queries
{
    "class": "Show",
    "query" : {
        "range": {
            "field": "ticketPrices.min",
            "below": "50",
            "excludeLimit": true
        }
    }
}

{
    "class": "Show",
    "query" : {
        "range": {
            "field": "ticketPrices.min",
            "from": "50",
            "to": "100"
            // TODO how to deal with "excludeLimit": true
        }
    }
}

//Phrase
{
    "class": "Show",
    "query": {
        "phrase": {
            "slop": 3,
            "fields": ["event.description", "venue.description"],
            "sentence": "colder and whitening"
        }
    }
}

//Spatial
{
    "class": "Show",
    "query": {
        "spatial": {
            "coordinates": "coordinates_field", // "defaultCoordinates": true ?
            "within": { "distance": 50, "unit": "km" },
            "of": {"latitude": 23.2323, "longitude": 12.111 }
        }
    }
}

//Faceting
{
    "class": "Show",
    "query": {
        "keyword": {
            "fields": [
                {
                    "name": "event.name",
                    "boost": 1,
                    "ignoreAnalyzer": true,
                    "ignoreFieldBridge": true
                },
                {
                    "name": "event.description"
                }
            ],
            "matching": "Decade"
        },
        "boost": 2,
        "constantScore": true,
        "filter": "TODO?"
    },
    "faceting": [ 
        {
            "name": "category",
            "field": "event.category",
            "discrete": {},
            "orderedBy": "FIELD_VALUE",
            "includeZeroCount": true,
            "maxFacetCount": 20
        },
        {
            "name": "minprice",
            "field": "ticketPrices.min",
            "range": [
                { "below": 50, "excludeLimit": true },
                { "from": 50, "to": 100, "excludeToLimit": true }, //TODO excludeLimit???
                { "from": 100, "to": 200, "excludeToLimit": true }, //TODO excludeLimit???
                { "above": 200 }
            ],
            "includeZeroCount": true,
            "orderedBy": "RANGE_DEFINITION_ORDER"
        }
    ]
}

//Faceting with selection
{
    "class": "Show",
    "query": {
        "keyword": {
            "fields": [
                {
                    "name": "event.name",
                    "boost": 1,
                    "ignoreAnalyzer": true,
                    "ignoreFieldBridge": true
                },
                {
                    "name": "event.description"
                }
            ],
            "matching": "Decade"
        },
        "boost": 2,
        "constantScore": true,
        "filter": "TODO?"
    },
    "faceting": [ 
        {
            "name": "category",
            "field": "event.category",
            "discrete": { "selectedIds": [1, 3] }, //or "selectedValues": ["concert"]
            "orderedBy": "FIELD_VALUE",
            "includeZeroCount": true,
            "maxFacetCount": 20
        },
        {
            "name": "minprice",
            "field": "ticketPrices.min",
            "range": [
                { "below": 50, "excludeLimit": true },
                { "from": 50, "to": 100, "excludeToLimit": true, "selected": true }, //TODO excludeLimit???
                { "from": 100, "to": 200, "excludeToLimit": true }, //TODO excludeLimit???
                { "above": 200 }
            ],
            "includeZeroCount": true,
            "orderedBy": "RANGE_DEFINITION_ORDER"
        }
    ]
}

Great examples, all very readable.

The only one which is puzzling me a bit is the "discrete" example (you have two); I don't think either is very self-explanatory.