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[#1339] feat(table): Add index for tables.
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23 changes: 23 additions & 0 deletions
23
api/src/main/java/com/datastrato/gravitino/rel/expressions/Indexes/Index.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| /* | ||
| * Copyright 2024 Datastrato Pvt Ltd. | ||
| * This software is licensed under the Apache License version 2. | ||
| */ | ||
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| package com.datastrato.gravitino.rel.expressions.Indexes; | ||
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| /** Represents an index on a table. */ | ||
| public interface Index { | ||
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| IndexType type(); | ||
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| /** @return The name of the index. */ | ||
| String name(); | ||
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| /** @return Returns the field name under the table contained in the index. eg: table.id */ | ||
| String[][] fieldNames(); | ||
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| enum IndexType { | ||
| PRIMARY_KEY, | ||
| UNIQUE_KEY, | ||
| } | ||
| } |
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73 changes: 73 additions & 0 deletions
73
common/src/main/java/com/datastrato/gravitino/dto/rel/indexes/IndexDTO.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| /* | ||
| * Copyright 2024 Datastrato Pvt Ltd. | ||
| * This software is licensed under the Apache License version 2. | ||
| */ | ||
| package com.datastrato.gravitino.dto.rel.indexes; | ||
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| import com.datastrato.gravitino.rel.expressions.Indexes.Index; | ||
| import com.google.common.base.Preconditions; | ||
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| public class IndexDTO implements Index { | ||
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| private final IndexType indexType; | ||
| private final String name; | ||
| private final String[][] fieldNames; | ||
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| public IndexDTO(IndexType indexType, String name, String[][] fieldNames) { | ||
| this.indexType = indexType; | ||
| this.name = name; | ||
| this.fieldNames = fieldNames; | ||
| } | ||
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| @Override | ||
| public IndexType type() { | ||
| return indexType; | ||
| } | ||
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| @Override | ||
| public String name() { | ||
| return name; | ||
| } | ||
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| @Override | ||
| public String[][] fieldNames() { | ||
| return fieldNames; | ||
| } | ||
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| public static Builder builder() { | ||
| return new Builder(); | ||
| } | ||
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| public static class Builder<S extends IndexDTO.Builder> { | ||
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| protected IndexType indexType; | ||
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| protected String name; | ||
| protected String[][] fieldNames; | ||
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| public Builder() {} | ||
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| public S withIndexType(IndexType indexType) { | ||
| this.indexType = indexType; | ||
| return (S) this; | ||
| } | ||
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| public S withName(String name) { | ||
| this.name = name; | ||
| return (S) this; | ||
| } | ||
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| public S withFieldNames(String[][] fieldNames) { | ||
| this.fieldNames = fieldNames; | ||
| return (S) this; | ||
| } | ||
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| public IndexDTO build() { | ||
| Preconditions.checkNotNull(indexType, "Index type cannot be null"); | ||
| Preconditions.checkNotNull(name, "Index name cannot be null"); | ||
| Preconditions.checkNotNull( | ||
| fieldNames, "The index must be set with corresponding column names"); | ||
| return new IndexDTO(indexType, name, fieldNames); | ||
| } | ||
| } | ||
| } |
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