Added script creation and execution for the split of an attribute

giis-uniovi · Oct 3, 2024 · d94fccf · d94fccf
1 parent f751cf0
commit d94fccf
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Showing 11 changed files with 161 additions and 23 deletions.
diff --git a/modevo-script/dat/bmk/testMindsV3SplitColumn-script.cql b/modevo-script/dat/bmk/testMindsV3SplitColumn-script.cql
@@ -0,0 +1,6 @@
+FOR $1,$2 = SELECT parent_guid, id FROM comments WHERE parent_guid>'f' ALLOW FILTERING
+FOR $3,$4 = SELECT parent_guid, id FROM comments WHERE parent_guid>'p' ALLOW FILTERING
+FOR $5,$6 = SELECT parent_guid, id FROM comments WHERE parent_guid<'p' ALLOW FILTERING
+INSERT INTO comments(parent_guid_c1, id) VALUES ($1, $2);
+INSERT INTO comments(parent_guid_c2, id) VALUES ($3, $4);
+INSERT INTO comments(parent_guid_c3, id) VALUES ($5, $6);
diff --git a/modevo-script/dat/inp/testMindsV3SplitColumn-initDB.cql b/modevo-script/dat/inp/testMindsV3SplitColumn-initDB.cql
@@ -0,0 +1,4 @@
+TRUNCATE "testMindsV3SplitColumn".comments;
+Insert into "testMindsV3SplitColumn".comments (id, parent_guid) values ('1', '100');
+Insert into "testMindsV3SplitColumn".comments (id, parent_guid) values ('2', '200');
+Insert into "testMindsV3SplitColumn".comments (id, parent_guid) values ('3', '300');
diff --git a/modevo-script/src/main/java/giis/modevo/migration/script/Insert.java b/modevo-script/src/main/java/giis/modevo/migration/script/Insert.java
@@ -16,9 +16,11 @@ public class Insert {
 	private String nameNewTable; //Only used when a new table is required when adding a new column
 	public Insert() {
 		columnValue = new ArrayList<>();
+		nameNewTable = "";
 	}
 	public Insert(Table table) {
 		this();
+
 		this.table = table;
 	}
 	public Insert(Table table, For insideFor) {
@@ -31,13 +33,14 @@ public Insert(Table table, For insideFor) {
 	 * @param key If there is no key, value is null
 	 * @param target 
 	 */
-	public void addColumnValue(Column columnSelect, Select s, String[] key, Column target) {
+	public ColumnValue addColumnValue(Column columnSelect, Select s, String[] key, Column target) {
 		ColumnValue cv = new ColumnValue ();
 		cv.setColumn(target);
 		cv.setSelectOrigin(s);
 		cv.setKey(key);
 		cv.setColumnSelectOrigin(columnSelect);
-		this.getColumnValue().add(cv);		
+		this.getColumnValue().add(cv);
+		return cv;
 	}
 	public String getNameNewTable() {
 		return nameNewTable;

diff --git a/modevo-script/src/main/java/giis/modevo/migration/script/Script.java b/modevo-script/src/main/java/giis/modevo/migration/script/Script.java
@@ -13,7 +13,10 @@
 import giis.modevo.model.schema.Column;
 import giis.modevo.model.schema.Schema;
 import giis.modevo.model.schema.Table;
+import giis.modevo.model.schemaevolution.CriteriaSplit;
+import giis.modevo.model.schemaevolution.SchemaChange;
 import giis.modevo.model.schemaevolution.SchemaEvolution;
+import giis.modevo.model.schemaevolution.SplitColumn;
 import lombok.Getter;
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
@@ -33,11 +36,13 @@ public class Script {
 	private List<Insert> inserts;
 	private ScriptText scriptText;
 	private boolean executable;
+	private List<For> forsSplit;
 	public Script () {
 		setExecutable(true);//default value
 		selects = new ArrayList<>();
 		fors = new ArrayList<>();
 		inserts = new ArrayList<>();
+		forsSplit = new ArrayList<>();
 		setForsHigherLevel(new ArrayList<>());
 		scriptText = new ScriptText();
 	}	
@@ -62,6 +67,9 @@ else if (mt.migrationFromOneTableNewTable(schema)) {
 			else if (mt.migrationNewColumn(schema) && !mt.migrationFromRemovePK(se, mt)) {
 				scripts.add(migrationNewColumn (schema, se, mt));
 			}
+			else if (mt.migrationSplitColumn(se)) {
+				scripts.add(migrationSplitColumn (schema, se, mt));
+			}
 			else {
 				return new ArrayList<>(); //Scenarios not implemented
 			}
@@ -70,6 +78,42 @@ else if (mt.migrationNewColumn(schema) && !mt.migrationFromRemovePK(se, mt)) {
 		return scripts;
 	}
 
+	private Script migrationSplitColumn(Schema schema, SchemaEvolution se, MigrationTable mt) {
+		log.info("Split Column Script. Target table: %s", mt.getName());
+		Script script = new Script ();
+		for (SchemaChange sc : se.getChanges()) {
+			if (sc instanceof SplitColumn spc) {
+				List<CriteriaSplit> critSplits = spc.getCs();
+				String oldColumn = spc.getOldColumn();
+				Table t = schema.getTable(mt.getName());
+				Column oldColumnObject = t.getColumn(oldColumn);
+				for (CriteriaSplit critSplit : critSplits) {
+					For forSplit = new For ();
+					Select s = new Select (forSplit);
+					s.setTable(t);
+					Column copyOldColumnObject = new Column (oldColumnObject);
+
+					s.getSearch().add(copyOldColumnObject);
+					s.setSplitColumn(copyOldColumnObject);
+					forSplit.getSelectsFor().add(s);
+					s.setCriteriaOperator(critSplit.getOperator());
+					s.setCriteriaValue(critSplit.getValue());
+					Insert insert = new Insert(schema.getTable(mt.getName()), forSplit);
+					insert.addColumnValue (copyOldColumnObject, s, null, critSplit.getColumn());
+					for (Column c: t.getKey()) {
+						ColumnValue cv=insert.addColumnValue (c, s, null, c);
+						Column copyTarget = new Column (c);
+						cv.getSelectOrigin().getSearch().add(copyTarget);
+						cv.setColumn(copyTarget);
+
+					}
+					script.getForsSplit().add(forSplit);
+					script.addForSelectInsert(forSplit, s, insert);
+				}
+			}
+		}
+		return script;
+	}
 	private void checkIfExecutable(List<Script> scripts) {
 		for (Script s: scripts) {
 			for (Insert i: s.getInserts()) {
@@ -261,7 +305,7 @@ private Select insertSelect(Column c, Table from, String[] keyColumnFrom, Schema
 
 	public boolean inList(Column c, List<ColumnValue> columnValues) {
 		for (ColumnValue cv : columnValues) {
-			if (cv.getColumn().equals(c)) {
+			if (cv.getColumn().equalsValues(c)) {
 				return true;
 			}
 		}

diff --git a/modevo-script/src/main/java/giis/modevo/migration/script/ScriptText.java b/modevo-script/src/main/java/giis/modevo/migration/script/ScriptText.java
@@ -21,10 +21,18 @@ public String writeScript(Script s) {
 			return "Not executable script because there are key columns that cannot be inserted";
 		}
 		StringBuilder sb = new StringBuilder();
-		For forNested = s.getFors().get(0);
-		while (forNested != null) {
-			writeSyntaxFor (sb, forNested, s);
-			forNested = forNested.getNestedFor();
+		if (s.getForsSplit().isEmpty()) {
+			For forNested = s.getFors().get(0);
+			while (forNested != null) {
+				writeSyntaxFor (sb, forNested, s);
+				forNested = forNested.getNestedFor();
+			}
+		}
+		else { //When there is a split
+			List<For> forsSplit = s.getForsSplit();
+			for (For forSplit:forsSplit) {
+				writeSyntaxFor (sb, forSplit, s);
+			}
 		}
 		writeSyntaxInsert (sb, s);
 		log.info("Script screated");
@@ -53,8 +61,16 @@ private void writeSyntaxInsert(StringBuilder sb, Script s) {
 				if (cv.getVariableName()==null) {
 					cv.setVariableName(cv.getColumn().getVariableName());
 				}
+				if (cv.getVariableName()==null) {
+					cv.setVariableName(cv.getColumnSelectOrigin().getVariableName());
+				}
 				String nameColumn = cv.getColumn().getName();
 				String nameVariable=cv.getSelectOrigin().findNameVariable (cv.getColumn().getNameAttribute(), cv.getColumn().getNameEntity());
+				if (nameVariable == null) {
+					Column columnOrigin = cv.getSelectOrigin().getSplitColumn();
+					nameVariable=columnOrigin.getVariableName();
+
+				}
 				namesColumns.append(nameColumn);
 				insertPlaceholders.append(nameVariable);
 			}
@@ -99,6 +115,9 @@ private String buildSelect(Select s, StringBuilder sb, Script se) {
 			counterVariables++;
 		}
 		columns.append(" FROM ").append(s.getTable().getName());
+		if (!se.getForsSplit().isEmpty()) {
+			textCriteriaSplit (s, columns);
+		}
 		for (int j=0; j<s.getWhere().size();j++) {
 			if (j==0) {
 				columns.append(" WHERE ");
@@ -121,6 +140,31 @@ private String buildSelect(Select s, StringBuilder sb, Script se) {
 
 	}
 
+	private void textCriteriaSplit(Select s, StringBuilder columns) {
+			columns.append(" WHERE ");
+			String nameColumn = s.getSplitColumn().getName();
+			columns.append(nameColumn);
+			String criteriaOperator = s.getCriteriaOperator();
+			switch (criteriaOperator) {
+			case "eq":
+				columns.append("=");
+				break;
+			case "g":
+				columns.append(">");
+				break;
+			case "l":
+				columns.append("<");
+				break;
+			case "ge":
+				columns.append(">=");
+				break;
+			case "le":
+				columns.append("<=");
+				break;
+			}
+			columns.append("'"+s.getCriteriaValue()+"'");
+			columns.append(" ALLOW FILTERING");
+	}
 	private String getNameVariableColumn(Column ce, Script s) {
 		String nameAttribute = ce.getNameAttribute();
 		String nameEntity = ce.getNameEntity();

diff --git a/modevo-script/src/main/java/giis/modevo/migration/script/Select.java b/modevo-script/src/main/java/giis/modevo/migration/script/Select.java
@@ -18,6 +18,9 @@ public class Select {
 	private List<ColumnValue> whereValue;
 	private List<Column> where;
 	private String selectStatement;
+	private String criteriaOperator;
+	private String criteriaValue;
+	private Column splitColumn;
 	private For insideFor; //when the SELECT is inside a FOR
 	private For loopFor; //when the FOR iterates over the SELECT results
 

diff --git a/modevo-script/src/main/java/giis/modevo/migration/script/execution/ScriptExecution.java b/modevo-script/src/main/java/giis/modevo/migration/script/execution/ScriptExecution.java
@@ -32,20 +32,28 @@ public void execute(Script script, CassandraConnection c, String nameKeyspace) {
 			return;
 		}
 		List<For> highLevelFors = script.getForsHigherLevel();
+		List<For> splitFors = script.getForsSplit();
 		for (For highFor : highLevelFors) {
-			List<Select> highLevelSelects = highFor.getSelectsFor();
-			Select s = highLevelSelects.get(0); //For now there is only one select at most, change into a list when there will be more.
-			String nameTable = s.getTable().getName();
-			String selectStatementWithKeyspace = s.getSelectStatement().replace(FROM+nameTable,FROM+ "\""+nameKeyspace+"\"."+nameTable);
-			ResultSet rs = c.executeStatement(selectStatementWithKeyspace);
-			Iterator<Row> resultIt = rs.iterator();
-			while (resultIt.hasNext()) {	
-				Row rw = resultIt.next();
-				List<ColumnValue> cvs = getColumnValuesSearchRow(rw, s);
-				List<Select> selectsInside = highFor.getSelectsInsideFor();
-				List<List<ColumnValue>> cvsFromWhere = executeSelects (cvs, selectsInside, c, nameKeyspace);
-				executeInserts (script, cvs, cvsFromWhere, highFor, c, nameKeyspace);			
-			}
+			executionFor (highFor, script, c, nameKeyspace);
+		}
+		for (For splitFor : splitFors) {
+			executionFor (splitFor, script, c, nameKeyspace);
+		}
+
+	}
+	private void executionFor (For forToExecute, Script script, CassandraConnection c, String nameKeyspace) {
+		List<Select> highLevelSelects = forToExecute.getSelectsFor();
+		Select s = highLevelSelects.get(0); //For now there is only one select at most, change into a list when there will be more.
+		String nameTable = s.getTable().getName();
+		String selectStatementWithKeyspace = s.getSelectStatement().replace(FROM+nameTable,FROM+ "\""+nameKeyspace+"\"."+nameTable);
+		ResultSet rs = c.executeStatement(selectStatementWithKeyspace);
+		Iterator<Row> resultIt = rs.iterator();
+		while (resultIt.hasNext()) {	
+			Row rw = resultIt.next();
+			List<ColumnValue> cvs = getColumnValuesSearchRow(rw, s);
+			List<Select> selectsInside = forToExecute.getSelectsInsideFor();
+			List<List<ColumnValue>> cvsFromWhere = executeSelects (cvs, selectsInside, c, nameKeyspace);
+			executeInserts (script, cvs, cvsFromWhere, forToExecute, c, nameKeyspace);			
 		}
 	}
 	/**

diff --git a/modevo-script/src/test/java/test4giis/script/TestExecutionScript.java b/modevo-script/src/test/java/test4giis/script/TestExecutionScript.java
@@ -61,6 +61,10 @@ public void testThingsBoardV13NewColumnKeyInTable()  {
 		testScript(name.getMethodName(), connection);	
 	}
 	@Test
+	public void testMindsV3SplitColumn () {
+		testScript(name.getMethodName(), connection);	
+	}
+	@Test
 	public void testMindsV9NewTableMigrationFromOneTable () {
 		testScript(name.getMethodName(), connection);	
 	}

diff --git a/modevo-transform/dat/inp/testMindsV3SplitColumn-schemaChange.xmi b/modevo-transform/dat/inp/testMindsV3SplitColumn-schemaChange.xmi
@@ -22,15 +22,15 @@
         xmi:id="cs1"
         column="c1"
         value="f"
-        operator="gt"/>
+        operator="g"/>
      <CriteriaScplit
         xmi:id="cs2"
         column="c2"
         value="p"
-        operator="gt"/>     
+        operator="g"/>     
      <CriteriaScplit
         xmi:id="cs3"
         column="c3"
         value="p"
-        operator="lt"/>
+        operator="l"/>
 </xmi:XMI>
diff --git a/modevo-transform/src/main/java/giis/modevo/model/datamigration/MigrationTable.java b/modevo-transform/src/main/java/giis/modevo/model/datamigration/MigrationTable.java
@@ -9,6 +9,7 @@
 import giis.modevo.model.schemaevolution.RemovePK;
 import giis.modevo.model.schemaevolution.SchemaChange;
 import giis.modevo.model.schemaevolution.SchemaEvolution;
+import giis.modevo.model.schemaevolution.SplitColumn;
 import lombok.Getter;
 import lombok.Setter;
 
@@ -125,6 +126,17 @@ public boolean migrationFromRemovePK(SchemaEvolution se, MigrationTable mt) {
 		}
 		return false;
 	}
+	/**
+	 * Checks if the migration script contains a split of a column
+	 */
+	public boolean migrationSplitColumn(SchemaEvolution se) {
+		for (SchemaChange sc : se.getChanges()) {
+			if (sc instanceof SplitColumn) {
+				return true;
+			}
+		}
+		return false;
+	}
 
 
 }
diff --git a/modevo-transform/src/main/java/giis/modevo/model/schema/Column.java b/modevo-transform/src/main/java/giis/modevo/model/schema/Column.java
@@ -43,11 +43,21 @@ public Column(Column c) {
 		this.ck = c.ck;
 		this.setNameAttribute(c.nameAttribute);
 		this.table = c.table;
+		this.dataType = c.dataType;
+		this.nameEntity = c.nameEntity;
+		this.variableName = c.variableName;
 
 	}
 
 	public Column(String nameTable) {
 		this.name = nameTable;
 	}
+
+	public boolean equalsValues (Column c) {
+		if (c.getName().equals(this.getName()) && c.getTable().equals(this.getTable()) && c.getNameAttribute().equals(this.getNameAttribute()) && c.getNameEntity().equals(this.getNameEntity())) {
+			return true;
+		}
+		return false;
+	}
 
 }