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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| import { StatusBar } from 'expo-status-bar'; | ||
| import { StyleSheet, View } from 'react-native'; | ||
| import { SearchBarWidget } from '../library/widgets/SearchBarWidget'; | ||
|
|
||
| export default function Modal() { | ||
| return ( | ||
| <View style={styles.container}> | ||
| <SearchBarWidget /> | ||
| <StatusBar style={'light'} /> | ||
| </View> | ||
| ); | ||
| } | ||
|
|
||
| const styles = StyleSheet.create({ | ||
| container: { | ||
| flex: 1, | ||
| flexGrow: 1, | ||
| alignItems: 'center', | ||
| justifyContent: 'center' | ||
| } | ||
| }); |
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33 changes: 33 additions & 0 deletions
33
demos/react-native-supabase-todolist/library/fts/fts_helpers.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| import { system } from '../powersync/system'; | ||
|
|
||
| /** | ||
| * adding * to the end of the search term will match any word that starts with the search term | ||
| * e.g. searching bl will match blue, black, etc. | ||
| * consult FTS5 Full-text Query Syntax documentation for more options | ||
| * @param searchTerm | ||
| * @returns a modified search term with options. | ||
| */ | ||
| function createSearchTermWithOptions(searchTerm: string): string { | ||
| const searchTermWithOptions: string = `${searchTerm}*`; | ||
| return searchTermWithOptions; | ||
| } | ||
|
|
||
| /** | ||
| * Search the FTS table for the given searchTerm | ||
| * @param searchTerm | ||
| * @param tableName | ||
| * @returns results from the FTS table | ||
| */ | ||
| export async function searchTable(searchTerm: string, tableName: string): Promise<any[]> { | ||
| const searchTermWithOptions = createSearchTermWithOptions(searchTerm); | ||
| return await system.powersync.getAll(`SELECT * FROM fts_${tableName} WHERE fts_${tableName} MATCH ? ORDER BY rank`, [ | ||
| searchTermWithOptions | ||
| ]); | ||
| } | ||
|
|
||
| //Used to display the search results in the autocomplete text field | ||
| export interface SearchResult { | ||
| id: string; | ||
| listName: string; | ||
| todoName: string | null; | ||
| } |
69 changes: 69 additions & 0 deletions
69
demos/react-native-supabase-todolist/library/fts/fts_setup.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| import { AppSchema } from '../powersync/AppSchema'; | ||
| import { ExtractType, generateJsonExtracts } from './helpers'; | ||
| import { PowerSyncDatabase } from '@powersync/react-native'; | ||
|
|
||
| /** | ||
| * Create a Full Text Search table for the given table and columns | ||
| * with an option to use a different tokenizer otherwise it defaults | ||
| * to unicode61. It also creates the triggers that keep the FTS table | ||
| * and the PowerSync table in sync. | ||
| * @param tableName | ||
| * @param columns | ||
| * @param tokenizationMethod | ||
| */ | ||
| async function createFtsTable( | ||
| db: PowerSyncDatabase, | ||
| tableName: string, | ||
| columns: string[], | ||
| tokenizationMethod = 'unicode61' | ||
| ): Promise<void> { | ||
| const internalName = AppSchema.tables.find((table) => table.name === tableName)?.internalName; | ||
| const stringColumns = columns.join(', '); | ||
|
|
||
| return await db.writeTransaction(async (tx) => { | ||
| // Add FTS table | ||
| await tx.execute(` | ||
| CREATE VIRTUAL TABLE IF NOT EXISTS fts_${tableName} | ||
| USING fts5(id UNINDEXED, ${stringColumns}, tokenize='${tokenizationMethod}'); | ||
| `); | ||
| // Copy over records already in table | ||
| await tx.execute(` | ||
| INSERT OR REPLACE INTO fts_${tableName}(rowid, id, ${stringColumns}) | ||
| SELECT rowid, id, ${generateJsonExtracts(ExtractType.columnOnly, 'data', columns)} FROM ${internalName}; | ||
| `); | ||
| // Add INSERT, UPDATE and DELETE and triggers to keep fts table in sync with table | ||
| await tx.execute(` | ||
| CREATE TRIGGER IF NOT EXISTS fts_insert_trigger_${tableName} AFTER INSERT ON ${internalName} | ||
| BEGIN | ||
| INSERT INTO fts_${tableName}(rowid, id, ${stringColumns}) | ||
| VALUES ( | ||
| NEW.rowid, | ||
| NEW.id, | ||
| ${generateJsonExtracts(ExtractType.columnOnly, 'NEW.data', columns)} | ||
| ); | ||
| END; | ||
| `); | ||
| await tx.execute(` | ||
| CREATE TRIGGER IF NOT EXISTS fts_update_trigger_${tableName} AFTER UPDATE ON ${internalName} BEGIN | ||
| UPDATE fts_${tableName} | ||
| SET ${generateJsonExtracts(ExtractType.columnInOperation, 'NEW.data', columns)} | ||
| WHERE rowid = NEW.rowid; | ||
| END; | ||
| `); | ||
| await tx.execute(` | ||
| CREATE TRIGGER IF NOT EXISTS fts_delete_trigger_${tableName} AFTER DELETE ON ${internalName} BEGIN | ||
| DELETE FROM fts_${tableName} WHERE rowid = OLD.rowid; | ||
| END; | ||
| `); | ||
| }); | ||
| } | ||
|
|
||
| /** | ||
| * This is where you can add more methods to generate FTS tables in this demo | ||
| * that correspond to the tables in your schema and populate them | ||
| * with the data you would like to search on | ||
| */ | ||
| export async function configureFts(db: PowerSyncDatabase): Promise<void> { | ||
| await createFtsTable(db, 'lists', ['name'], 'porter unicode61'); | ||
| await createFtsTable(db, 'todos', ['description', 'list_id']); | ||
| } |
36 changes: 36 additions & 0 deletions
36
demos/react-native-supabase-todolist/library/fts/helpers.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| type ExtractGenerator = (jsonColumnName: string, columnName: string) => string; | ||
|
|
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| export enum ExtractType { | ||
| columnOnly, | ||
| columnInOperation | ||
| } | ||
|
|
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| type ExtractGeneratorMap = Map<ExtractType, ExtractGenerator>; | ||
|
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| function _createExtract(jsonColumnName: string, columnName: string): string { | ||
| return `json_extract(${jsonColumnName}, '$.${columnName}')`; | ||
| } | ||
|
|
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| const extractGeneratorsMap: ExtractGeneratorMap = new Map<ExtractType, ExtractGenerator>([ | ||
| [ExtractType.columnOnly, (jsonColumnName: string, columnName: string) => _createExtract(jsonColumnName, columnName)], | ||
| [ | ||
| ExtractType.columnInOperation, | ||
| (jsonColumnName: string, columnName: string) => { | ||
| const extract = _createExtract(jsonColumnName, columnName); | ||
| return `${columnName} = ${extract}`; | ||
| } | ||
| ] | ||
| ]); | ||
|
|
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| export const generateJsonExtracts = (type: ExtractType, jsonColumnName: string, columns: string[]): string => { | ||
| const generator = extractGeneratorsMap.get(type); | ||
| if (generator == null) { | ||
| throw new Error('Unexpected null generator for key: $type'); | ||
| } | ||
|
|
||
| if (columns.length == 1) { | ||
| return generator(jsonColumnName, columns[0]); | ||
| } | ||
|
|
||
| return columns.map((column) => generator(jsonColumnName, column)).join(', '); | ||
| }; |
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93 changes: 93 additions & 0 deletions
93
demos/react-native-supabase-todolist/library/widgets/AutoCompleteWidget.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| import { View, StyleSheet } from 'react-native'; | ||
| import { Input, ListItem } from '@rneui/themed'; | ||
| import React, { useState } from 'react'; | ||
| import { IconNode } from '@rneui/base'; | ||
|
|
||
| export interface AutocompleteWidgetProps { | ||
| data: any[]; | ||
| onChange: (value: string) => void; | ||
| placeholder?: string; | ||
| onPress: (id: string) => void; | ||
| leftIcon?: IconNode; | ||
| } | ||
|
|
||
| export const Autocomplete: React.FC<AutocompleteWidgetProps> = ({ data, onChange, placeholder, onPress, leftIcon }) => { | ||
| const [value, setValue] = useState(''); | ||
| const [menuVisible, setMenuVisible] = useState(false); | ||
|
|
||
| return ( | ||
| <View style={styles.container}> | ||
| <View style={styles.inputContainer}> | ||
| <Input | ||
| onFocus={() => { | ||
| if (value?.length === 0) { | ||
| setMenuVisible(true); | ||
| } | ||
| }} | ||
| leftIcon={leftIcon} | ||
| placeholder={placeholder} | ||
| onBlur={() => setMenuVisible(false)} | ||
| underlineColorAndroid={'transparent'} | ||
| inputContainerStyle={{ borderBottomWidth: 0 }} | ||
| onChangeText={(text) => { | ||
| onChange(text); | ||
| setMenuVisible(true); | ||
| setValue(text); | ||
| }} | ||
| containerStyle={{ | ||
| borderColor: 'black', | ||
| borderWidth: 1, | ||
| borderRadius: 4, | ||
| height: 48, | ||
| backgroundColor: 'white' | ||
| }} | ||
| /> | ||
| </View> | ||
| {menuVisible && ( | ||
| <View style={styles.menuContainer}> | ||
| {data.map((val, index) => ( | ||
| <ListItem | ||
| bottomDivider | ||
| key={index} | ||
| onPress={() => { | ||
| setMenuVisible(false); | ||
| onPress(val.id); | ||
| }} | ||
| style={{ paddingBottom: 8 }}> | ||
| <ListItem.Content> | ||
| {val.listName && ( | ||
| <ListItem.Title style={{ fontSize: 18, color: 'black' }}>{val.listName}</ListItem.Title> | ||
| )} | ||
| {val.todoName && ( | ||
| <ListItem.Subtitle style={{ fontSize: 14, color: 'grey' }}> | ||
| {'\u2022'} {val.todoName} | ||
| </ListItem.Subtitle> | ||
| )} | ||
| </ListItem.Content> | ||
| <ListItem.Chevron /> | ||
| </ListItem> | ||
| ))} | ||
| </View> | ||
| )} | ||
| </View> | ||
| ); | ||
| }; | ||
|
|
||
| const styles = StyleSheet.create({ | ||
| container: { | ||
| flexDirection: 'column', | ||
| flex: 1, | ||
| flexGrow: 1, | ||
| marginHorizontal: 8 | ||
| }, | ||
| inputContainer: { | ||
| flexDirection: 'row', | ||
| flex: 0, | ||
| marginVertical: 8 | ||
| }, | ||
| menuContainer: { | ||
| flex: 2, | ||
| flexGrow: 1, | ||
| flexDirection: 'column' | ||
| } | ||
| }); |
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