com.abubusoft.kripton.processor.sqlite.SqlSelectBuilder Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2015, 2017 Francesco Benincasa ([email protected]).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
package com.abubusoft.kripton.processor.sqlite;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import javax.lang.model.element.Modifier;
import com.abubusoft.kripton.android.sqlite.KriptonContentValues;
import com.abubusoft.kripton.android.sqlite.SqlUtils;
import com.abubusoft.kripton.common.Pair;
import com.abubusoft.kripton.common.StringUtils;
import com.abubusoft.kripton.processor.core.AssertKripton;
import com.abubusoft.kripton.processor.core.ModelMethod;
import com.abubusoft.kripton.processor.core.reflect.TypeUtility;
import com.abubusoft.kripton.processor.sqlite.SelectBuilderUtility.SelectType;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQL;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQL.JQLDynamicStatementType;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQLChecker;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQLKeywords;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQLPlaceHolder;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQLProjection;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQLProjection.ProjectionType;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQLReplaceVariableStatementListenerImpl;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQLReplacerListenerImpl;
import com.abubusoft.kripton.processor.sqlite.grammars.uri.ContentUriPlaceHolder;
import com.abubusoft.kripton.processor.sqlite.model.SQLProperty;
import com.abubusoft.kripton.processor.sqlite.model.SQLiteDaoDefinition;
import com.abubusoft.kripton.processor.sqlite.model.SQLiteEntity;
import com.abubusoft.kripton.processor.sqlite.model.SQLiteModelMethod;
import com.squareup.javapoet.ArrayTypeName;
import com.squareup.javapoet.MethodSpec;
import com.squareup.javapoet.ParameterSpec;
import com.squareup.javapoet.TypeName;
import com.squareup.javapoet.TypeSpec.Builder;
import android.database.Cursor;
import android.net.Uri;
/**
* The Class SqlSelectBuilder.
*/
public abstract class SqlSelectBuilder {
/**
* Gets the name parameter of type.
*
* @param method the method
* @param parameter the parameter
* @return the name parameter of type
*/
public static String getNameParameterOfType(ModelMethod method, TypeName parameter) {
for (Pair item : method.getParameters()) {
if (item.value1.equals(parameter)) {
return item.value0;
}
}
return null;
}
/**
* Generate select.
*
* @param builder the builder
* @param method the method
* @throws ClassNotFoundException the class not found exception
*/
public static void generateSelect(Builder builder, SQLiteModelMethod method) throws ClassNotFoundException {
SelectType selectResultType = SelectBuilderUtility.detectSelectType(method);
// generate select method
selectResultType.generate(builder, method);
if (method.hasLiveData()) {
// generate
selectResultType.generateLiveData(builder, method);
}
if (method.contentProviderEntryPathEnabled) {
// we need to generate UPDATE or DELETE for content provider to
generateSelectForContentProvider(builder, method, selectResultType);
}
}
/**
* The Class SplittedSql.
*/
public static class SplittedSql {
/** The sql where statement. */
public String sqlWhereStatement;
/** The sql order by statement. */
public String sqlOrderByStatement;
/** The sql offset statement. */
public String sqlOffsetStatement;
/** The sql limit statement. */
public String sqlLimitStatement;
/** The sql having statement. */
public String sqlHavingStatement;
/** The sql group statement. */
public String sqlGroupStatement;
/** The sql basic. */
public String sqlBasic;
}
/**
*
* Generate select used in content provider class.
*
*
* @param builder the builder
* @param method the method
* @param selectResultType the select result type
*/
private static void generateSelectForContentProvider(Builder builder, final SQLiteModelMethod method, SelectType selectResultType) {
final SQLiteDaoDefinition daoDefinition = method.getParent();
final SQLiteEntity entity = daoDefinition.getEntity();
final Set columns = new LinkedHashSet<>();
MethodSpec.Builder methodBuilder = MethodSpec.methodBuilder(method.contentProviderMethodName);
if (!method.getParent().hasSamePackageOfSchema()) {methodBuilder.addModifiers(Modifier.PUBLIC); }
// params
methodBuilder.addParameter(ParameterSpec.builder(Uri.class, "uri").build());
methodBuilder.addParameter(ParameterSpec.builder(ArrayTypeName.of(String.class), "projection").build());
methodBuilder.addParameter(ParameterSpec.builder(String.class, "selection").build());
methodBuilder.addParameter(ParameterSpec.builder(ArrayTypeName.of(String.class), "selectionArgs").build());
methodBuilder.addParameter(ParameterSpec.builder(String.class, "sortOrder").build());
methodBuilder.returns(Cursor.class);
SqlBuilderHelper.generateLogForContentProviderBeginning(method, methodBuilder);
JQLChecker jqlChecker = JQLChecker.getInstance();
SplittedSql splittedSql = generateSQL(method, methodBuilder, true);
List placeHolders = jqlChecker.extractFromVariableStatement(method, splittedSql.sqlWhereStatement);
// remove placeholder for dynamic where, we are not interested here
placeHolders = SqlBuilderHelper.removeDynamicPlaceHolder(placeHolders);
AssertKripton.assertTrue(placeHolders.size() == method.contentProviderUriVariables.size(),
"In '%s.%s' content provider URI path variables and variables in where conditions are different. If SQL uses parameters, they must be defined in URI path.", daoDefinition.getName(),
method.getName());
Set projectedColumns = jqlChecker.extractProjections(method, method.jql.value, entity);
for (JQLProjection item : projectedColumns) {
if (item.type == ProjectionType.COLUMN) {
columns.add(entity.get(item.column.trim()).columnName);
} else {
columns.add(item.expression.trim());
}
}
methodBuilder.addStatement("$T _contentValues=contentValues()", KriptonContentValues.class);
methodBuilder.addStatement("$T _sqlBuilder=sqlBuilder()", StringBuilder.class);
SqlModifyBuilder.generateInitForDynamicWhereVariables(method, methodBuilder, "selection", "selectionArgs");
methodBuilder.addStatement("$T _projectionBuffer=new $T()", StringBuilder.class, StringBuilder.class);
if (method.jql.isOrderBy()) {
methodBuilder.addStatement("String _sortOrder=sortOrder");
}
methodBuilder.addStatement("_sqlBuilder.append($S)", splittedSql.sqlBasic);
SqlBuilderHelper.generateWhereCondition(methodBuilder, method, false);
generateDynamicPartOfQuery(method, methodBuilder, splittedSql);
// generate and check columns
{
methodBuilder.addCode("\n// manage projected columns\n");
methodBuilder.addStatement("String _columnSeparator=\"\"");
methodBuilder.beginControlFlow("if (projection!=null && projection.length>0)");
// generate projected column check
String columnCheckSetName = SqlBuilderHelper.generateColumnCheckSet(builder, method, columns);
SqlBuilderHelper.forEachColumnInContentValue(methodBuilder, method, "projection", true, new OnColumnListener() {
@Override
public void onColumnCheck(MethodSpec.Builder methodBuilder, String projectedColumnVariable) {
methodBuilder.addStatement("_projectionBuffer.append(_columnSeparator + $L)", projectedColumnVariable);
methodBuilder.addStatement("_columnSeparator=\", \"");
}
});
methodBuilder.nextControlFlow("else");
methodBuilder.beginControlFlow("for (String column: $L)", columnCheckSetName);
methodBuilder.addStatement("_projectionBuffer.append(_columnSeparator + column)");
methodBuilder.addStatement("_columnSeparator=\", \"");
methodBuilder.endControlFlow();
methodBuilder.endControlFlow();
int i = 0;
// extract pathVariables
// every controls was done in constructor of SQLiteModelMethod
for (ContentUriPlaceHolder variable : method.contentProviderUriVariables) {
AssertKripton.assertTrue(SqlBuilderHelper.validate(variable.value, placeHolders, i), "In '%s.%s' content provider URI path and where conditions must use same set of variables",
daoDefinition.getName(), method.getName());
SQLProperty entityProperty = entity.get(variable.value);
TypeName methodParameterType = method.findParameterTypeByAliasOrName(variable.value);
methodBuilder.addCode("// Add parameter $L at path segment $L\n", variable.value, variable.pathSegmentIndex);
// methodBuilder.addStatement("_sqlWhereParams.add(uri.getPathSegments().get($L))",
// variable.pathSegmentIndex);
methodBuilder.addStatement("_contentValues.addWhereArgs(uri.getPathSegments().get($L))", variable.pathSegmentIndex);
if (entityProperty != null) {
AssertKripton.assertTrue(TypeUtility.isTypeIncludedIn(entityProperty.getPropertyType().getTypeName(), String.class, Long.class, Long.TYPE),
"In '%s.%s' content provider URI path variables %s must be String of Long type", daoDefinition.getName(), method.getName(), entityProperty.getName());
} else if (methodParameterType != null) {
AssertKripton.assertTrue(TypeUtility.isTypeIncludedIn(methodParameterType, String.class, Long.class, Long.TYPE),
"In '%s.%s' content provider URI path variables %s must be String of Long type", daoDefinition.getName(), method.getName(),
method.findParameterNameByAlias(variable.value));
}
i++;
}
}
// _sql must be always defined
methodBuilder.addStatement("String _sql=String.format(_sqlBuilder.toString(), _projectionBuffer.toString())");
SqlBuilderHelper.generateLogForSQL(method, methodBuilder);
SqlBuilderHelper.generateLogForWhereParameters(method, methodBuilder);
methodBuilder.addCode("\n// execute query\n");
// methodBuilder.addStatement("Cursor _result =
// database().rawQuery(_sql, _sqlWhereParams.toArray(new
// String[_sqlWhereParams.size()]))");
methodBuilder.addStatement("Cursor _result = database().rawQuery(_sql, _contentValues.whereArgsAsArray())");
methodBuilder.addStatement("return _result");
// we add at last javadoc, because need info is built at last.
SqlBuilderHelper.generateJavaDocForContentProvider(method, methodBuilder);
methodBuilder.addJavadoc("@param uri $S\n", method.contentProviderUriTemplate.replace("*", "[*]"));
methodBuilder.addJavadoc("@param selection dynamic part of where statement $L\n", method.hasDynamicWhereConditions() ? "" : "NOT USED");
methodBuilder.addJavadoc("@param selectionArgs arguments of dynamic part of where statement $L\n", method.hasDynamicWhereConditions() ? "" : "NOT USED");
methodBuilder.addJavadoc("@return number of effected rows\n");
builder.addMethod(methodBuilder.build());
}
/**
* Generate dynamic part of query.
*
* @param method the method
* @param methodBuilder the method builder
* @param splittedSql the splitted sql
*/
public static void generateDynamicPartOfQuery(final SQLiteModelMethod method, MethodSpec.Builder methodBuilder, SplittedSql splittedSql) {
final JQL jql = method.jql;
if (StringUtils.hasText(splittedSql.sqlGroupStatement)) {
methodBuilder.addCode("\n// manage GROUP BY statement\n");
methodBuilder.addStatement("String _sqlGroupByStatement=$S", splittedSql.sqlGroupStatement);
methodBuilder.addStatement("_sqlBuilder.append($L)", "_sqlGroupByStatement");
}
if (StringUtils.hasText(splittedSql.sqlHavingStatement)) {
methodBuilder.addCode("\n// manage HAVING statement\n");
methodBuilder.addStatement("String _sqlHavingStatement=$S", splittedSql.sqlHavingStatement);
methodBuilder.addStatement("_sqlBuilder.append($L)", "_sqlHavingStatement");
}
if (jql.isOrderBy()) {
methodBuilder.addComment("generation order - BEGIN");
String value = splittedSql.sqlOrderByStatement;
String valueToReplace = jql.dynamicReplace.get(JQLDynamicStatementType.DYNAMIC_ORDER_BY);
if (jql.isStaticOrderBy() && !jql.isDynamicOrderBy()) {
// case static statement and NO dynamic
methodBuilder.addStatement("String _sqlOrderByStatement=$S", value);
} else if (jql.isStaticOrderBy() && jql.isDynamicOrderBy()) {
methodBuilder.addStatement("String _sqlOrderByStatement=$S+$T.ifNotEmptyAppend($L, \", \")", value.replace(valueToReplace, ""), StringUtils.class, "_sortOrder");
} else if (!jql.isStaticOrderBy() && jql.isDynamicOrderBy()) {
methodBuilder.addStatement("String _sqlOrderByStatement=$T.ifNotEmptyAppend($L,\" $L \")", StringUtils.class, "_sortOrder", JQLKeywords.ORDER_BY_KEYWORD);
}
methodBuilder.addStatement("_sqlBuilder.append($L)", "_sqlOrderByStatement");
methodBuilder.addComment("generation order - END");
methodBuilder.addCode("\n");
}
if (jql.dynamicReplace.containsKey(JQLDynamicStatementType.DYNAMIC_PAGE_SIZE) || jql.annotatedPageSize) {
methodBuilder.addComment("generation limit - BEGIN");
if (jql.annotatedPageSize) {
methodBuilder.addStatement("String _sqlLimitStatement=$S", splittedSql.sqlLimitStatement);
} else if (jql.hasParamPageSize()) {
methodBuilder.addStatement("String _sqlLimitStatement=$T.printIf($L>0, \" LIMIT \"+$L)", SqlUtils.class, jql.paramPageSize, jql.paramPageSize);
}
methodBuilder.addStatement("_sqlBuilder.append($L)", "_sqlLimitStatement");
methodBuilder.addComment("generation limit - END");
methodBuilder.addCode("\n");
}
if (jql.dynamicReplace.containsKey(JQLDynamicStatementType.DYNAMIC_PAGE_OFFSET)) {
methodBuilder.addComment("generation offset - BEGIN");
if (jql.annotatedPageSize) {
methodBuilder.addStatement("String _sqlOffsetStatement=\" OFFSET \"+paginatedResult.firstRow()", SqlUtils.class);
} else if (jql.hasParamPageSize()) {
methodBuilder.addStatement("String _sqlOffsetStatement=$T.printIf($L>0 && paginatedResult.firstRow()>0, \" OFFSET \"+paginatedResult.firstRow())", SqlUtils.class, jql.paramPageSize);
}
methodBuilder.addStatement("_sqlBuilder.append($L)", "_sqlOffsetStatement");
methodBuilder.addComment("generation offset - END");
methodBuilder.addCode("\n");
}
}
/**
* Generate SQL.
*
* @param method the method
* @param methodBuilder the method builder
* @param replaceProjectedColumns the replace projected columns
* @return the splitted sql
*/
static SplittedSql generateSQL(final SQLiteModelMethod method, MethodSpec.Builder methodBuilder, final boolean replaceProjectedColumns) {
JQLChecker jqlChecker = JQLChecker.getInstance();
final SplittedSql splittedSql = new SplittedSql();
String sql = convertJQL2SQL(method, false);
// parameters extracted from JQL converted in SQL
splittedSql.sqlBasic = jqlChecker.replaceVariableStatements(method, sql, new JQLReplaceVariableStatementListenerImpl() {
@Override
public String onWhere(String statement) {
splittedSql.sqlWhereStatement = statement;
return "";
}
@Override
public String onOrderBy(String statement) {
splittedSql.sqlOrderByStatement = statement;
return "";
}
@Override
public String onOffset(String statement) {
splittedSql.sqlOffsetStatement = statement;
return "";
}
@Override
public String onLimit(String statement) {
splittedSql.sqlLimitStatement = statement;
return "";
}
@Override
public String onHaving(String statement) {
splittedSql.sqlHavingStatement = statement;
return "";
}
@Override
public String onGroup(String statement) {
splittedSql.sqlGroupStatement = statement;
return "";
}
@Override
public String onProjectedColumns(String statement) {
if (replaceProjectedColumns)
return "%s";
else
return null;
}
});
return splittedSql;
}
/**
* Convert JQL 2 SQL.
*
* @param method the method
* @param replaceWithQuestion the replace with question
* @return the string
*/
public static String convertJQL2SQL(final SQLiteModelMethod method, final boolean replaceWithQuestion) {
JQLChecker jqlChecker = JQLChecker.getInstance();
// convert jql to sql
String sql = jqlChecker.replace(method, method.jql, new JQLReplacerListenerImpl(method) {
@Override
public String onBindParameter(String bindParameterName) {
if (replaceWithQuestion) {
return "?";
}
return "${" + bindParameterName + "}";
}
@Override
public String onColumnName(String columnName) {
SQLProperty tempProperty = currentEntity.get(columnName);
AssertKripton.assertTrueOrUnknownPropertyInJQLException(tempProperty != null, method, columnName);
return tempProperty.columnName;
}
});
return sql;
}
}