first commit

src/main/java/com/andrewkydev/database/schema/ColumnSpec.java

@@ -0,0 +1,85 @@
+package com.andrewkydev.database.schema;
+
+public final class ColumnSpec {
+    private final String name;
+    private final String type;
+    private final boolean nullable;
+    private final String defaultValue;
+    private final boolean autoIncrement;
+    private final boolean primaryKey;
+
+    private ColumnSpec(Builder builder) {
+        this.name = builder.name;
+        this.type = builder.type;
+        this.nullable = builder.nullable;
+        this.defaultValue = builder.defaultValue;
+        this.autoIncrement = builder.autoIncrement;
+        this.primaryKey = builder.primaryKey;
+    }
+
+    public static Builder builder(String name, String type) {
+        return new Builder(name, type);
+    }
+
+    public String name() {
+        return name;
+    }
+
+    public String type() {
+        return type;
+    }
+
+    public boolean nullable() {
+        return nullable;
+    }
+
+    public String defaultValue() {
+        return defaultValue;
+    }
+
+    public boolean autoIncrement() {
+        return autoIncrement;
+    }
+
+    public boolean primaryKey() {
+        return primaryKey;
+    }
+
+    public static final class Builder {
+        private final String name;
+        private final String type;
+        private boolean nullable = true;
+        private String defaultValue;
+        private boolean autoIncrement;
+        private boolean primaryKey;
+
+        private Builder(String name, String type) {
+            this.name = name;
+            this.type = type;
+        }
+
+        public Builder nullable(boolean nullable) {
+            this.nullable = nullable;
+            return this;
+        }
+
+        public Builder defaultValue(String defaultValue) {
+            this.defaultValue = defaultValue;
+            return this;
+        }
+
+        public Builder autoIncrement(boolean autoIncrement) {
+            this.autoIncrement = autoIncrement;
+            return this;
+        }
+
+        public Builder primaryKey(boolean primaryKey) {
+            this.primaryKey = primaryKey;
+            return this;
+        }
+
+        public ColumnSpec build() {
+            return new ColumnSpec(this);
+        }
+    }
+}

src/main/java/com/andrewkydev/database/schema/IndexSpec.java

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+package com.andrewkydev.database.schema;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public final class IndexSpec {
+    private final String name;
+    private final List<String> columns;
+    private final boolean unique;
+
+    public IndexSpec(String name, List<String> columns, boolean unique) {
+        this.name = name;
+        this.columns = Collections.unmodifiableList(new ArrayList<>(columns));
+        this.unique = unique;
+    }
+
+    public String name() {
+        return name;
+    }
+
+    public List<String> columns() {
+        return columns;
+    }
+
+    public boolean unique() {
+        return unique;
+    }
+}

src/main/java/com/andrewkydev/database/schema/Schema.java

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+package com.andrewkydev.database.schema;
+
+import java.util.concurrent.CompletableFuture;
+
+public interface Schema {
+
+    void createDatabase(String name);
+
+    void dropDatabase(String name);
+
+    void createTable(TableSpec spec);
+
+    void dropTable(String table);
+
+    void addColumn(String table, ColumnSpec column);
+
+    void updateColumn(String table, ColumnSpec column);
+
+    void dropColumn(String table, String column);
+
+    void addIndex(String table, IndexSpec index);
+
+    void dropIndex(String table, String indexName);
+
+    CompletableFuture<Void> createDatabaseAsync(String name);
+
+    CompletableFuture<Void> dropDatabaseAsync(String name);
+
+    CompletableFuture<Void> createTableAsync(TableSpec spec);
+
+    CompletableFuture<Void> dropTableAsync(String table);
+
+    CompletableFuture<Void> addColumnAsync(String table, ColumnSpec column);
+
+    CompletableFuture<Void> updateColumnAsync(String table, ColumnSpec column);
+
+    CompletableFuture<Void> dropColumnAsync(String table, String column);
+
+    CompletableFuture<Void> addIndexAsync(String table, IndexSpec index);
+
+    CompletableFuture<Void> dropIndexAsync(String table, String indexName);
+}

src/main/java/com/andrewkydev/database/schema/SqlDialect.java

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+package com.andrewkydev.database.schema;
+
+public enum SqlDialect {
+    MYSQL,
+    POSTGRESQL
+}

src/main/java/com/andrewkydev/database/schema/TableSpec.java

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+package com.andrewkydev.database.schema;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public final class TableSpec {
+    private final String name;
+    private final List<ColumnSpec> columns;
+    private final List<String> primaryKey;
+    private final List<IndexSpec> indexes;
+
+    private TableSpec(Builder builder) {
+        this.name = builder.name;
+        this.columns = Collections.unmodifiableList(new ArrayList<>(builder.columns));
+        this.primaryKey = Collections.unmodifiableList(new ArrayList<>(builder.primaryKey));
+        this.indexes = Collections.unmodifiableList(new ArrayList<>(builder.indexes));
+    }
+
+    public static Builder builder(String name) {
+        return new Builder(name);
+    }
+
+    public String name() {
+        return name;
+    }
+
+    public List<ColumnSpec> columns() {
+        return columns;
+    }
+
+    public List<String> primaryKey() {
+        return primaryKey;
+    }
+
+    public List<IndexSpec> indexes() {
+        return indexes;
+    }
+
+    public static final class Builder {
+        private final String name;
+        private final List<ColumnSpec> columns = new ArrayList<>();
+        private final List<String> primaryKey = new ArrayList<>();
+        private final List<IndexSpec> indexes = new ArrayList<>();
+
+        private Builder(String name) {
+            this.name = name;
+        }
+
+        public Builder column(ColumnSpec column) {
+            this.columns.add(column);
+            return this;
+        }
+
+        public Builder columns(List<ColumnSpec> columns) {
+            this.columns.addAll(columns);
+            return this;
+        }
+
+        public Builder primaryKey(List<String> columns) {
+            this.primaryKey.clear();
+            this.primaryKey.addAll(columns);
+            return this;
+        }
+
+        public Builder index(IndexSpec index) {
+            this.indexes.add(index);
+            return this;
+        }
+
+        public Builder indexes(List<IndexSpec> indexes) {
+            this.indexes.addAll(indexes);
+            return this;
+        }
+
+        public TableSpec build() {
+            return new TableSpec(this);
+        }
+    }
+}