[Devel] adding PostgreSqlAuditQueryVisitor
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/*
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* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package li.strolch.persistence.postgresql;
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import java.sql.PreparedStatement;
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import java.sql.SQLException;
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import java.util.ArrayList;
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import java.util.List;
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import li.strolch.model.audit.AccessType;
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import li.strolch.model.audit.ActionSelection;
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import li.strolch.model.audit.AuditQuery;
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import li.strolch.model.audit.AuditQueryVisitor;
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import li.strolch.model.audit.DateRangeSelection;
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import li.strolch.model.audit.ElementSelection;
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import li.strolch.model.audit.IdentitySelection;
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import li.strolch.model.query.StringSelection;
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import ch.eitchnet.utils.StringMatchMode;
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/**
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* @author Robert von Burg <eitch@eitchnet.ch>
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*/
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public class PostgreSqlAuditQueryVisitor implements AuditQueryVisitor {
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protected StringBuilder sql;
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protected StringBuilder sb;
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protected List<Object> values;
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protected String indent;
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private String sqlAsString;
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/**
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* @param fields
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*/
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public PostgreSqlAuditQueryVisitor(String fields) {
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this.indent = "";
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this.sql = new StringBuilder();
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this.sb = new StringBuilder();
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this.values = new ArrayList<>();
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this.sql.append("select ");
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this.sql.append(fields);
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this.sql.append("\nfrom\n");
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this.sql.append(" ");
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this.sql.append(PostgreSqlAuditDao.TABLE_NAME);
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this.indent = " ";
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}
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public String getSql() {
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if (sqlAsString != null)
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return sqlAsString;
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this.sql.append("\nwhere\n");
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this.sql.append(this.indent);
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this.sql.append(this.sb.toString());
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sqlAsString = this.sql.toString();
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return sqlAsString;
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}
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@Override
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public void visit(ElementSelection selection) {
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if (selection.isWildcard())
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return;
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if (!selection.isElementsAccessedWildcard()) {
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StringSelection sel = selection.getElementAccessedSelection();
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toSql(sel.getMatchMode(), sel.getValues());
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}
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if (!selection.isElementTypesWildcard()) {
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StringSelection sel = selection.getElementTypeSelection();
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toSql(sel.getMatchMode(), sel.getValues());
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}
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}
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private void toSql(StringMatchMode mm, String[] values) {
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this.sb.append(this.indent);
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this.sb.append(PostgreSqlHelper.toSql(this.indent, mm, this.values, values));
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}
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@Override
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public void visit(IdentitySelection selection) {
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if (selection.isWildcard())
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return;
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if (!selection.isFirstnameWildcard()) {
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StringSelection sel = selection.getFirstnameSelection();
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toSql(sel.getMatchMode(), sel.getValues());
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}
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if (!selection.isLastnameWildcard()) {
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StringSelection sel = selection.getLastnameSelection();
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toSql(sel.getMatchMode(), sel.getValues());
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}
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if (!selection.isUsernameWildcard()) {
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StringSelection sel = selection.getUsernameSelection();
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toSql(sel.getMatchMode(), sel.getValues());
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}
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}
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@Override
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public void visit(DateRangeSelection selection) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(ActionSelection selection) {
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if (!selection.isWildcardAction()) {
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StringSelection sel = selection.getActionSelection();
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toSql(sel.getMatchMode(), sel.getValues());
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}
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if (!selection.isWildcardActionType()) {
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AccessType[] accessTypes = selection.getAccessTypes();
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String[] query = new String[accessTypes.length];
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for (int i = 0; i < accessTypes.length; i++) {
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query[i] = accessTypes[i].name();
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}
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toSql(StringMatchMode.EQUALS_CASE_SENSITIVE, query);
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}
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}
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@Override
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public void visit(AuditQuery auditQuery) {
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// TODO Auto-generated method stub
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}
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/**
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* @param ps
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* @throws SQLException
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*/
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public void setValues(PreparedStatement ps) throws SQLException {
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for (int i = 0; i < this.values.size(); i++) {
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ps.setObject(i + 1, this.values.get(i));
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}
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}
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}
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