Golang sql.DescriptorMutation类代码示例

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本文整理汇总了Golang中github.com/cockroachdb/cockroach/sql.DescriptorMutation类的典型用法代码示例。如果您正苦于以下问题：Golang DescriptorMutation类的具体用法？Golang DescriptorMutation怎么用？Golang DescriptorMutation使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了DescriptorMutation类的4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: writeMutation

// writeMutation writes the mutation to the table descriptor. If the
// State or the Direction is undefined, these values are populated via
// picking random values before the mutation is written.
func (mt mutationTest) writeMutation(m csql.DescriptorMutation) {
	if m.Direction == csql.DescriptorMutation_NONE {
		// randomly pick ADD/DROP mutation.
		r := rand.Intn(2)
		if r == 0 {
			m.Direction = csql.DescriptorMutation_ADD
		} else {
			m.Direction = csql.DescriptorMutation_DROP
		}
	}
	if m.State == csql.DescriptorMutation_UNKNOWN {
		// randomly pick DELETE_ONLY/WRITE_ONLY state.
		r := rand.Intn(2)
		if r == 0 {
			m.State = csql.DescriptorMutation_DELETE_ONLY
		} else {
			m.State = csql.DescriptorMutation_WRITE_ONLY
		}
	}
	tableDesc := mt.desc.GetTable()
	tableDesc.Mutations = append(tableDesc.Mutations, m)
	if err := tableDesc.Validate(); err != nil {
		mt.Fatal(err)
	}
	if err := mt.kvDB.Put(mt.descKey, mt.desc); err != nil {
		mt.Fatal(err)
	}
}

开发者ID:billhongs，项目名称:cockroach，代码行数:31，代码来源:descriptor_mutation_test.go

示例2: writeIndexMutation

// writeIndexMutation adds index as a mutation and writes the
// descriptor to the DB.
func (mt mutationTest) writeIndexMutation(index string, m csql.DescriptorMutation) {
	tableDesc := mt.desc.GetTable()
	_, i, err := tableDesc.FindIndexByName(index)
	if err != nil {
		mt.Fatal(err)
	}
	idx := tableDesc.Indexes[i]
	tableDesc.Indexes = append(tableDesc.Indexes[:i], tableDesc.Indexes[i+1:]...)
	m.Descriptor_ = &csql.DescriptorMutation_Index{Index: &idx}
	mt.writeMutation(m)
}

开发者ID:billhongs，项目名称:cockroach，代码行数:13，代码来源:descriptor_mutation_test.go

示例3: writeColumnMutation

// writeColumnMutation adds column as a mutation and writes the
// descriptor to the DB.
func (mt mutationTest) writeColumnMutation(column string, m csql.DescriptorMutation) {
	tableDesc := mt.desc.GetTable()
	_, i, err := tableDesc.FindColumnByName(column)
	if err != nil {
		mt.Fatal(err)
	}
	col := tableDesc.Columns[i]
	tableDesc.Columns = append(tableDesc.Columns[:i], tableDesc.Columns[i+1:]...)
	m.Descriptor_ = &csql.DescriptorMutation_Column{Column: &col}
	mt.writeMutation(m)
}

开发者ID:billhongs，项目名称:cockroach，代码行数:13，代码来源:descriptor_mutation_test.go

示例4: writeColumnMutation

// writeColumnMutation adds column as a mutation and writes the
// descriptor to the DB.
func (mt mutationTest) writeColumnMutation(t *testing.T, column string, state csql.DescriptorMutation_State) {
	tableDesc := mt.desc.GetTable()
	i, err := tableDesc.FindColumnByName(column)
	if err != nil {
		t.Fatal(err)
	}
	col := &tableDesc.Columns[i]
	m := csql.DescriptorMutation{Descriptor_: &csql.DescriptorMutation_Column{Column: col}, State: state}
	// randomly pick add/drop mutation.
	r := rand.Intn(2)
	if r == 0 {
		m.Direction = csql.DescriptorMutation_ADD
	} else {
		m.Direction = csql.DescriptorMutation_DROP
	}
	tableDesc.Mutations = append(tableDesc.Mutations, m)
	tableDesc.Columns = append(tableDesc.Columns[:i], tableDesc.Columns[i+1:]...)
	if err := tableDesc.Validate(); err != nil {
		t.Fatal(err)
	}
	if err := mt.kvDB.Put(mt.descKey, mt.desc); err != nil {
		t.Fatal(err)
	}
}

开发者ID:simudream，项目名称:cockroach，代码行数:26，代码来源:descriptor_mutation_test.go

注：本文中的github.com/cockroachdb/cockroach/sql.DescriptorMutation类示例整理自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。