Golang predicate.Parse函数代码示例

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本文整理汇总了Golang中github.com/google/badwolf/triple/predicate.Parse函数的典型用法代码示例。如果您正苦于以下问题：Golang Parse函数的具体用法？Golang Parse怎么用？Golang Parse使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了Parse函数的14个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: processPredicate

// processPredicate updates the working graph clause if threre is an available
// predcicate.
func processPredicate(c *GraphClause, ce ConsumedElement, lastNopToken *lexer.Token) (*predicate.Predicate, string, string, error) {
	var (
		nP             *predicate.Predicate
		pID            string
		pAnchorBinding string
	)
	raw := ce.Token().Text
	p, err := predicate.Parse(raw)
	if err == nil {
		// A fully specified predicate was provided.
		nP = p
		return nP, pID, pAnchorBinding, nil
	}
	// The predicate may have a binding on the anchor.
	cmps := predicateRegexp.FindAllStringSubmatch(raw, 2)
	if len(cmps) != 1 || (len(cmps) == 1 && len(cmps[0]) != 3) {
		return nil, "", "", fmt.Errorf("failed to extract partialy defined predicate %q, got %v instead", raw, cmps)
	}
	id, ta := cmps[0][1], cmps[0][2]
	pID = id
	if ta != "" {
		pAnchorBinding = ta
	}
	return nil, pID, pAnchorBinding, nil
}

开发者ID:ranjeet-floyd，项目名称:badwolf，代码行数:27，代码来源:hooks.go

示例2: dataAccumulator

// dataAccumulator creates a element hook that tracks fully formed triples and
// adds them to the Statement when fully formed.
func dataAccumulator(b literal.Builder) ElementHook {
	var (
		hook ElementHook
		s    *node.Node
		p    *predicate.Predicate
		o    *triple.Object
	)

	hook = func(st *Statement, ce ConsumedElement) (ElementHook, error) {
		if ce.IsSymbol() {
			return hook, nil
		}
		tkn := ce.Token()
		if tkn.Type != lexer.ItemNode && tkn.Type != lexer.ItemPredicate && tkn.Type != lexer.ItemLiteral {
			return hook, nil
		}
		if s == nil {
			if tkn.Type != lexer.ItemNode {
				return nil, fmt.Errorf("hook.DataAccumulator requires a node to create a subject, got %v instead", tkn)
			}
			tmp, err := node.Parse(tkn.Text)
			if err != nil {
				return nil, err
			}
			s = tmp
			return hook, nil
		}
		if p == nil {
			if tkn.Type != lexer.ItemPredicate {
				return nil, fmt.Errorf("hook.DataAccumulator requires a predicate to create a predicate, got %v instead", tkn)
			}
			tmp, err := predicate.Parse(tkn.Text)
			if err != nil {
				return nil, err
			}
			p = tmp
			return hook, nil
		}
		if o == nil {
			tmp, err := triple.ParseObject(tkn.Text, b)
			if err != nil {
				return nil, err
			}
			o = tmp
			trpl, err := triple.NewTriple(s, p, o)
			if err != nil {
				return nil, err
			}
			st.AddData(trpl)
			s, p, o = nil, nil, nil
			return hook, nil
		}
		return nil, fmt.Errorf("hook.DataAccumulator has failed to flush the triple %s, %s, %s", s, p, o)
	}
	return hook
}

开发者ID:ranjeet-floyd，项目名称:badwolf，代码行数:58，代码来源:hooks.go

示例3: ToPredicate

// ToPredicate converts the node found by the lexer and converts it into a
// BadWolf predicate.
func ToPredicate(ce ConsumedElement) (*predicate.Predicate, error) {
	if ce.IsSymbol() {
		return nil, fmt.Errorf("semantic.ToPredicate cannot convert symbol %v to a predicate", ce)
	}
	tkn := ce.Token()
	if tkn.Type != lexer.ItemPredicate {
		return nil, fmt.Errorf("semantic.ToPredicate cannot convert token type %s to a predicate", tkn.Type)
	}
	return predicate.Parse(tkn.Text)
}

开发者ID:ranjeet-floyd，项目名称:badwolf，代码行数:12，代码来源:convert.go

示例4: getTestData

func getTestData(t *testing.T) (*node.Node, *predicate.Predicate, *Object) {
	s, err := node.Parse("/some/type<some id>")
	if err != nil {
		t.Fatalf("Failed to create test node")
	}
	p, err := predicate.Parse("\"foo\"@[]")
	if err != nil {
		t.Fatalf("Failed to create test predicate")
	}
	o := NewNodeObject(s)
	return s, p, o
}

开发者ID:ranjeet-floyd，项目名称:badwolf，代码行数:12，代码来源:triple_test.go

示例5: collectGlobalBounds

// collectGlobalBounds collects the global time bounds that should be applied
// to all temporal predicates.
func collectGlobalBounds() ElementHook {
	var (
		f         func(st *Statement, ce ConsumedElement) (ElementHook, error)
		opToken   *lexer.Token
		lastToken *lexer.Token
	)
	f = func(st *Statement, ce ConsumedElement) (ElementHook, error) {
		if ce.IsSymbol() {
			return f, nil
		}
		tkn := ce.token
		switch tkn.Type {
		case lexer.ItemBefore, lexer.ItemAfter, lexer.ItemBetween:
			if lastToken != nil {
				return nil, fmt.Errorf("invalid token %v after already valid token %v", tkn, lastToken)
			}
			opToken, lastToken = tkn, tkn
		case lexer.ItemComma:
			if lastToken == nil || opToken.Type != lexer.ItemBetween {
				return nil, fmt.Errorf("token %v can only be used in a between clause; previous token %v instead", tkn, lastToken)
			}
			lastToken = tkn
		case lexer.ItemPredicate:
			if lastToken == nil {
				return nil, fmt.Errorf("invalid token %v without a global time modifier", tkn)
			}
			p, err := predicate.Parse(tkn.Text)
			if err != nil {
				return nil, err
			}
			if p.ID() != "" {
				return nil, fmt.Errorf("global time bounds do not accept individual predicate IDs; found %s instead", p)
			}
			ta, err := p.TimeAnchor()
			if err != nil {
				return nil, err
			}
			if lastToken.Type == lexer.ItemComma || lastToken.Type == lexer.ItemBefore {
				st.lookupOptions.UpperAnchor = ta
				opToken, lastToken = nil, nil
			} else {
				st.lookupOptions.LowerAnchor = ta
				if opToken.Type != lexer.ItemBetween {
					opToken, lastToken = nil, nil
				}
			}
		default:
			return nil, fmt.Errorf("global bound found unexpected token %v", tkn)
		}
		return f, nil
	}
	return f
}

开发者ID:google，项目名称:badwolf，代码行数:55，代码来源:hooks.go

示例6: TestTemporalBoundedLookupChecker

func TestTemporalBoundedLookupChecker(t *testing.T) {
	lpa, err := predicate.Parse("\"foo\"@[2013-07-19T13:12:04.669618843-07:00]")
	if err != nil {
		t.Fatalf("Failed to parse fixture predicate with error %v", err)
	}
	mpa, err := predicate.Parse("\"foo\"@[2014-07-19T13:12:04.669618843-07:00]")
	if err != nil {
		t.Fatalf("Failed to parse fixture predicate with error %v", err)
	}
	upa, err := predicate.Parse("\"foo\"@[2015-07-19T13:12:04.669618843-07:00]")
	if err != nil {
		t.Fatalf("Failed to parse fixture predicate with error %v", err)
	}
	// Check lower bound
	lb, _ := lpa.TimeAnchor()
	blu := &storage.LookupOptions{LowerAnchor: lb}
	clu := newChecker(blu)
	if !clu.CheckAndUpdate(mpa) {
		t.Errorf("Failed to reject invalid predicate %v by checker %v", mpa, clu)
	}
	lb, _ = mpa.TimeAnchor()
	blu = &storage.LookupOptions{LowerAnchor: lb}
	clu = newChecker(blu)
	if clu.CheckAndUpdate(lpa) {
		t.Errorf("Failed to reject invalid predicate %v by checker %v", mpa, clu)
	}
	// Check upper bound.
	ub, _ := upa.TimeAnchor()
	buu := &storage.LookupOptions{UpperAnchor: ub}
	cuu := newChecker(buu)
	if !cuu.CheckAndUpdate(mpa) {
		t.Errorf("Failed to reject invalid predicate %v by checker %v", mpa, cuu)
	}
	ub, _ = mpa.TimeAnchor()
	buu = &storage.LookupOptions{UpperAnchor: ub}
	cuu = newChecker(buu)
	if cuu.CheckAndUpdate(upa) {
		t.Errorf("Failed to reject invalid predicate %v by checker %v", mpa, cuu)
	}
}

开发者ID:defrager，项目名称:badwolf，代码行数:40，代码来源:memory_test.go

示例7: ParseObject

// ParseObject attempts to parse and object.
func ParseObject(s string, b literal.Builder) (*Object, error) {
	n, err := node.Parse(s)
	if err != nil {
		l, err := b.Parse(s)
		if err != nil {
			o, err := predicate.Parse(s)
			if err != nil {
				return nil, err
			}
			return NewPredicateObject(o), nil
		}
		return NewLiteralObject(l), nil
	}
	return NewNodeObject(n), nil
}

开发者ID:ranjeet-floyd，项目名称:badwolf，代码行数:16，代码来源:triple.go

示例8: testNodeTemporalPredicateLiteral

func testNodeTemporalPredicateLiteral(t *testing.T) (*node.Node, *predicate.Predicate, *literal.Literal) {
	n, err := node.Parse(`/foo<bar>`)
	if err != nil {
		t.Fatal(err)
	}
	p, err := predicate.Parse(`"bar"@[1975-01-01T00:01:01.999999999Z]`)
	if err != nil {
		t.Fatal(err)
	}
	l, err := literal.DefaultBuilder().Parse(`"true"^^type:bool`)
	if err != nil {
		t.Fatal(err)
	}
	return n, p, l
}

开发者ID:google，项目名称:badwolf，代码行数:15，代码来源:data_access_test.go

示例9: testNodePredicateLiteral

func testNodePredicateLiteral(t *testing.T) (*node.Node, *predicate.Predicate, *literal.Literal) {
	n, err := node.Parse(`/foo<bar>`)
	if err != nil {
		t.Fatal(err)
	}
	p, err := predicate.Parse(`"foo"@[]`)
	if err != nil {
		t.Fatal(err)
	}
	l, err := literal.DefaultBuilder().Parse(`"true"^^type:bool`)
	if err != nil {
		t.Fatal(err)
	}
	return n, p, l
}

开发者ID:google，项目名称:badwolf，代码行数:15，代码来源:data_access_test.go

示例10: inferCell

// inferCell builds a Cell out of the provided string.
func inferCell(s string) *table.Cell {
	if n, err := node.Parse(s); err == nil {
		return &table.Cell{N: n}
	}
	if p, err := predicate.Parse(s); err == nil {
		return &table.Cell{P: p}
	}
	if l, err := literal.DefaultBuilder().Parse(s); err == nil {
		return &table.Cell{L: l}
	}
	t, err := time.Parse(time.RFC3339Nano, s)
	if err == nil {
		return &table.Cell{T: &t}
	}
	return &table.Cell{S: table.CellString(s)}
}

开发者ID:google，项目名称:badwolf，代码行数:17，代码来源:entry.go

示例11: Parse

// Parse process the provided text and tries to create a triple. It assumes
// that the provided text contains only one triple.
func Parse(line string, b literal.Builder) (*Triple, error) {
	raw := strings.TrimSpace(line)
	idxp := pSplit.FindIndex([]byte(raw))
	idxo := oSplit.FindIndex([]byte(raw))
	if len(idxp) == 0 || len(idxo) == 0 {
		return nil, fmt.Errorf("triple.Parse could not split s p o  out of %s", raw)
	}
	ss, sp, so := raw[0:idxp[0]+1], raw[idxp[1]-1:idxo[0]+1], raw[idxo[1]-1:]
	s, err := node.Parse(ss)
	if err != nil {
		return nil, fmt.Errorf("triple.Parse failed to parse subject %s with error %v", ss, err)
	}
	p, err := predicate.Parse(sp)
	if err != nil {
		return nil, fmt.Errorf("triple.Parse failed to parse predicate %s with error %v", sp, err)
	}
	o, err := ParseObject(so, b)
	if err != nil {
		return nil, fmt.Errorf("triple.Parse failed to parse object %s with error %v", so, err)
	}
	return New(s, p, o)
}

开发者ID:google，项目名称:badwolf，代码行数:24，代码来源:triple.go

示例12: TestWhereObjectClauseHook

func TestWhereObjectClauseHook(t *testing.T) {
	st := &Statement{}
	f := whereObjectClause()
	st.ResetWorkingGraphClause()
	node, err := node.Parse("/_<foo>")
	if err != nil {
		t.Fatalf("node.Parse failed with error %v", err)
	}
	n := triple.NewNodeObject(node)
	pred, err := predicate.Parse(`"foo"@[2015-07-19T13:12:04.669618843-07:00]`)
	if err != nil {
		t.Fatalf("predicate.Parse failed with error %v", err)
	}
	p := triple.NewPredicateObject(pred)
	tlb, err := time.Parse(time.RFC3339Nano, `2015-07-19T13:12:04.669618843-07:00`)
	if err != nil {
		t.Fatalf("time.Parse failed to parse valid lower time bound with error %v", err)
	}
	tub, err := time.Parse(time.RFC3339Nano, `2016-07-19T13:12:04.669618843-07:00`)
	if err != nil {
		t.Fatalf("time.Parse failed to parse valid upper time bound with error %v", err)
	}
	l, err := triple.ParseObject(`"1"^^type:int64`, literal.DefaultBuilder())
	if err != nil {
		t.Fatalf("literal.Parse should have never fail to pars %s with error %v", `"1"^^type:int64`, err)
	}

	runTabulatedClauseHookTest(t, "semantic.whereObjectClause", f, []testClauseTable{
		{
			valid: true,
			id:    "node_example",
			ces: []ConsumedElement{
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemNode,
					Text: "/_<foo>",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAs,
					Text: "as",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar",
				}),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemType,
					Text: "type",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar2",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemID,
					Text: "id",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar3",
				}),
				NewConsumedSymbol("FOO"),
			},
			want: &GraphClause{
				O:          n,
				OAlias:     "?bar",
				OTypeAlias: "?bar2",
				OIDAlias:   "?bar3",
			},
		},
		{
			valid: true,
			id:    "binding_example",
			ces: []ConsumedElement{
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?foo",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAs,
					Text: "as",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar",
				}),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemType,
					Text: "type",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
//.........这里部分代码省略.........

开发者ID:google，项目名称:badwolf，代码行数:101，代码来源:hooks_test.go

示例13: TestWherePredicateClauseHook

func TestWherePredicateClauseHook(t *testing.T) {
	st := &Statement{}
	f := wherePredicateClause()
	st.ResetWorkingGraphClause()
	p, err := predicate.Parse(`"foo"@[2015-07-19T13:12:04.669618843-07:00]`)
	if err != nil {
		t.Fatalf("predicate.Parse failed with error %v", err)
	}
	tlb, err := time.Parse(time.RFC3339Nano, `2015-07-19T13:12:04.669618843-07:00`)
	if err != nil {
		t.Fatalf("time.Parse failed to parse valid lower time bound with error %v", err)
	}
	tub, err := time.Parse(time.RFC3339Nano, `2016-07-19T13:12:04.669618843-07:00`)
	if err != nil {
		t.Fatalf("time.Parse failed to parse valid upper time bound with error %v", err)
	}
	runTabulatedClauseHookTest(t, "semantic.wherePredicateClause", f, []testClauseTable{
		{
			valid: true,
			id:    "valid predicate",
			ces: []ConsumedElement{
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemPredicate,
					Text: `"foo"@[2015-07-19T13:12:04.669618843-07:00]`,
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAs,
					Text: "as",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar",
				}),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemID,
					Text: "id",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar2",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAt,
					Text: "at",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar3",
				}),
				NewConsumedSymbol("FOO"),
			},
			want: &GraphClause{
				P:            p,
				PAlias:       "?bar",
				PIDAlias:     "?bar2",
				PAnchorAlias: "?bar3",
				PTemporal:    true,
			},
		},
		{
			valid: true,
			id:    "valid predicate with binding",
			ces: []ConsumedElement{
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemPredicate,
					Text: `"foo"@[?foo]`,
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAs,
					Text: "as",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar",
				}),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemID,
					Text: "id",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar2",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAt,
					Text: "at",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
//.........这里部分代码省略.........

开发者ID:google，项目名称:badwolf，代码行数:101，代码来源:hooks_test.go

示例14: TestWherePredicatClauseHook

func TestWherePredicatClauseHook(t *testing.T) {
	st := &Statement{}
	f := wherePredicateClause()
	st.ResetWorkingGraphClause()
	p, err := predicate.Parse(`"foo"@[2015-07-19T13:12:04.669618843-07:00]`)
	if err != nil {
		t.Fatalf("predicate.Parse failed with error %v", err)
	}
	tlb, err := time.Parse(time.RFC3339Nano, `2015-07-19T13:12:04.669618843-07:00`)
	if err != nil {
		t.Fatalf("time.Parse failed to parse valid lower time bound with error %v", err)
	}
	tub, err := time.Parse(time.RFC3339Nano, `2016-07-19T13:12:04.669618843-07:00`)
	if err != nil {
		t.Fatalf("time.Parse failed to parse valid upper time bound with error %v", err)
	}
	table := []struct {
		valid bool
		id    string
		ces   []ConsumedElement
		want  *GraphClause
	}{
		{
			valid: true,
			id:    "valid predicate",
			ces: []ConsumedElement{
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemPredicate,
					Text: `"foo"@[2015-07-19T13:12:04.669618843-07:00]`,
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAs,
					Text: "as",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar",
				}),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemID,
					Text: "id",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar2",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAt,
					Text: "at",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar3",
				}),
				NewConsumedSymbol("FOO"),
			},
			want: &GraphClause{
				p:            p,
				pAlias:       "?bar",
				pIDAlias:     "?bar2",
				pAnchorAlias: "?bar3",
			},
		},
		{
			valid: true,
			id:    "valid predicate with binding",
			ces: []ConsumedElement{
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemPredicate,
					Text: `"foo"@[?foo]`,
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAs,
					Text: "as",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar",
				}),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemID,
					Text: "id",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemBinding,
					Text: "?bar2",
				}),
				NewConsumedSymbol("FOO"),
				NewConsumedToken(&lexer.Token{
					Type: lexer.ItemAt,
//.........这里部分代码省略.........

开发者ID:mrisher，项目名称:badwolf，代码行数:101，代码来源:hooks_test.go

注：本文中的github.com/google/badwolf/triple/predicate.Parse函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。